The system does not see a hard drive: possible causes and ways to solve the problem. What if the computer and bios do not see the hard drive? BIOS does not see the IDE disk

Good day, dear readers! In this article I will try to explain why the BIOS does not see hDD - As well as ways to solve such a problem, I will tell you in my article.

Such a problem when the hard disk is not determined by the computer, is the most common. It occurs, both on old and new computers. It also happens with new and old, external and built-in HDDs.

To begin with, of course, it is required to know the cause of such a problem. Sometimes users can independently decide and establish work with Windows and a hard disk of the laptop.

Why doesn't the computer sees a hard drive?

I note immediately that there are several reasons, because of which the Winchester refuses to perform its functions. To such reasons include:

For the first time, the new SATA or IDE disk occurred;
There were problems with a loop or wires;
Perhaps the BIOS is incorrectly configured or completely out of action;
Weak power supply;
Low cooling system;
Winchester itself failed.

Yes, you need to diagnose, and then solve the problem. Let's say, at an inexperienced user, some difficulty will arise with it. Let's help you, and we will deal together what and how.

The first connection of Winchester

If you first connect the screw, then, most likely, the system simply did not see him. Yes, it is physically in working condition, but it is not displayed among the local disks.

In order to correct this problem, you need to click on the Win and R keyboard, write a compmgmt.msc and specify "OK".

Lay and select "Drive Management".

In the appeared window, all your connected discs will be revealed in the middle, including your problem hard disk. As a rule, it is due to the wrong designated letter.

Layout the desired disk and click on it with the right mouse button, and then select "Change the drive letter or the path to the disk ...". "

A window will open in which you will need to click on the "Edit" button.

Now select the desired letter and specify "OK".

Wrong format

For the normal operation of the disk in Windows, the NTFS format is required.

Just as in the instructions above, go to "Disk Management", that is, repeat the previous first two steps. After that right-click on the disk and select "Format".

Choose file System - NTFS, and click "OK".

BIOS does not see the hard disk - setting

In some cases, the BIOS may be installed incorrect priority of devices for download. When booting a PC, press F2 (or DEL). On which key you must click on the start of the PC. By clicking on the desired key, you will go to BIOS.

Please note that because of the differences in the versions of the BIOS names of the menu items here and can then be slightly different.

Lay the tab "BOOT". Use arrows to manage. In the list of devices download to first place (1st boot priority / first Boot Device.) Stop your HDD.

Press F10 to save and output and then press Y to confirm. After that, the PC will be downloaded from the device you exhibited.

SATA mode

Often, users in BIOS missing operation mode, joint with IDE. In order to change, you need to go to BIOS, select Main, Advanced or Intefrated Peripherals and find the SATA OPERATION setting, Configure SATA AS, or onchip Sata Type.

Select IDE or Native IDE, press F10 and specify Y.

BIOS does not display hard drive

If the BIOS cannot determine your hard drive, then, most likely, the case is in incorrect adjustment or their failures.

Invalid settings appear due to user actions, and failure can occur for various reasons. So, ranging from nutritional interruptions and ending with even infection of the system. This may indicate a system date - if it is not accurate, then you have undoubtedly failed. To resolve this problem, you need to reset all settings.

Watch out motherboard Clear CMOS jumper.

Change the jumper from 1-2 contacts by 2-3, hold them of 20-30 seconds and then return to the starting position. In addition, there is another way. In the system unit, find the motherboard and pull out the battery from it.

You will need to return it back in 25-30 minutes.

Conclusion

Now you know what to do if the BIOS does not see the hard disk. I hope you could solve your problem, thank you all for your attention, as well as forget to ask any questions in the comments!

If you include a PC, and its BIOS does not see the SATA hard drive, then, despite the fact that this situation, of course, cannot be called pleasant, in some cases it can still be successfully resolved. However, methods for solving the problem and the likelihood of success in many ways depend on the causes of the malfunction, which theoretically there may be several.

Hard disks have long taken leading positions in the field long-term storage Information as devices that combine high capacity, low price and acceptable characteristics of reliability and speed. Although technology in the field hard disksPerhaps they were developed not at such a speed as technologies in the field of other computer components, such as the processor and memory, however, to date, hard drives are much superior to their predecessors in terms of capacity and speed. In the last decade, significant progress in improving the parameters of Winchesters was largely associated with the transition to new technology data exchange between the hard disk and motherboard -. Currently, SATA Winchesters have almost crowded hard drives with an IDE interface, largely due to its high speed and lack of restrictions characteristic of IDE drives. In particular, connect winchesters SATA. The computer is much easier and faster compared to IDE type drives.

However, drivers with SATA interface are not insured with problems. Often the situation occurs when the hard disk does not see the old operating system. But the problem is particularly unpleasant, the problem is that the hard disk is not recognized at the BIOS level. In a similar case, naturally, this hard disk cannot be used to store data; In addition, it is impossible to load it personal computer.

The causes of the situation when the BIOS does not see the hard disk may be somewhat, but mostly they can be divided into the following categories:

Winches or motherboard malfunction
Error connecting the drive
Error setting BIOS options

Errors when setting up BIOS options and fix them

Many Bios have a number of options that allow you to configure the settings of the SATA host controller in the chipset of the motherboard. In some cases, incorrect setting of values \u200b\u200bof such options can lead to the inoperability of all or some of the hard drives connected to the computer, or to the inoperability of their specific types, for example, drives connected to IDE connectors or SATA.

In particular, the option that occurs in some Bios has a variant of the PATA only value, which disables support for SATA hard drives, leaving for use only IDE interface drives. In addition, if the controller in the BIOS is configured in such a way that it supports the traditional circulation mode to drives in iDE modeIn this case, the system can support no more than 4 drives, and all the extra drives are simply not visible.

Sometimes it happens that the BIOS does not see the second installed in hard system SATA disk. In this case, the problem may be in the BIOS error, and that SATA drives belong to different SATA versions, for example, the first to SATA-2, and the second to SATA-3. In this case, it is best to install second tough The disk is also in SATA-2 mode using the appropriate jumper on its housing.

Some options, such as Serial-ATA Controller, allow you to turn off the SATA controller at all. In this case, all drives connected to the motherboard connectors will not work.

It should also be considered that in some BIOS you can turn off automatic definition Hard disks. Check if you have a similar option, and if so, its value should be installed in AUTO.

In addition, in some cases, especially for old motherboards and BIOSs, there may be an error in the BIOS, which interfere with the system to correctly recognize the hard disk. To exclude this feature, you need to reset the BIOS to the default settings, and if the BIOS still does not see the disk, then update the BIOS version of the computer.

Errors when connecting drives to the motherboard, physical malfunction of drives and other components of the system unit

SATA hard drives do not require jumpers settings to select Master and Slave modes, are vital to functioning IDE drives, so their configuration in the system is not required. In addition, SATA connectors and cables are much more convenient for connectors and IDE cables, and therefore most users do not have any special problems when connecting SATA hard drives. However, insufficiently dense contacts between cables and jacks can also lead to a situation where the BIOS does not see the SATA hard disk installed in the system. In the event that you made sure that the BIOS controller configuration is configured correctly, but the BIOS still does not see the disk, it makes sense to verify the reliability of cable connections to the motherboard, as well as check the cables themselves, changing them to other cables of a similar type.

If, after this procedure, the BIOS check still does not see the hard disk, that is, it makes sense to check it in another place, taking the second system unit - it is quite possible that the problem is the hard disk - in the disk controller or in a mechanical drive. In the first case, the disk is likely to be repaired, in the second case will have to look for him a replacement.

In some cases, the problem may not be in the hard disk, but in the SATA host controller on the motherboard. If so, then the motherboard is likely to be repaired. There are also cases when BIOS does not see hard drives due to faulty block Nutrition.

Conclusion

The situation when the BIOS of the personal computer does not see one or more hard drives working with the SATA interface, fortunately, is not so often. However, similar problem may occur, especially if an old computer is used in the computer bIOS version, containing errors, as well as if there are two SATA disks in the system at the same time relating to various SATA generations (in this case, the second disk may not be determined). In some cases, in some cases, it may also have an incorrect configuration of the BIOS options, incorrect or non-accurate disk connection using data cables or power. The user is not insured and from hardware failures in the operation of the disk controller, as well as in the work of the SATA host adapter, located on the motherboard. In recently, the problem can be corrected, as a rule, only by contacting the specialists of the service center.

Hard disks have long been occupied by leading positions in the field of long-term storage of information as devices combining high capacity, low price and acceptable reliability and speed characteristics. Although technology in the field of hard drives may have developed not at such a speed as technologies in the field of other computer components, such as the processor and memory, however, to date, hard drives are far superior to their predecessors in terms of capacity and speed. In the last decade, significant progress in the field of improving the parameters of Winchesters was largely associated with the transition to the new data exchange technology between the hard disk and the motherboard. Currently, SATA Winchesters have almost crowded hard drives with an IDE interface, largely due to its high speed and lack of restrictions characteristic of IDE drives. In particular, the connection of SATA hard drives to the computer is much easier and faster than IDE drives.

However, drivers with SATA interface are not insured with problems. Often there is a situation where the hard disk does not see the old operating system. But the problem is particularly unpleasant, the problem is that the hard disk is not recognized at the BIOS level. In a similar case, naturally, this hard disk cannot be used to store data; In addition, it is impossible to download a personal computer.

The causes of the situation when the BIOS does not see the hard disk may be somewhat, but mostly they can be divided into the following categories:

Winches or motherboard malfunction
Error connecting the drive
Error setting BIOS options

Errors when setting up BIOS options and fix them

In particular, the option that occurs in some Bios has a variant of the PATA only value, which disables support for SATA hard drives, leaving for use only IDE interface drives. In addition, if the controller in the BIOS is configured in such a way that it supports the traditional mode of accessing drives in IDE mode, then in this case the system can support no more than 4 drives, and all unnecessary drives will simply be visible.

Sometimes it happens that the BIOS does not see the second SATA hard disk installed in the system. In this case, the problem may be in the BIOS error, and that SATA drives belong to different SATA versions, for example, the first to SATA-2, and the second to SATA-3. In this case, it is best to install the second hard drive also into the operation of SATA-2 using the corresponding jumper on its housing.

Some options, such as Serial-ATA Controller, allow you to turn off the SATA controller at all. In this case, all drives connected to the motherboard connectors will not work.

It should also be noted that in some BIOS, you can disable the automatic definition of hard drives. Check if you have a similar option, and if so, its value should be installed in AUTO.

Errors when connecting drives to the motherboard, physical malfunction of drives and other components of the system unit

Conclusion

The situation when the BIOS of the personal computer does not see one or more hard drives working with the SATA interface, fortunately, is not so often. However, a similar problem may occur, especially if an old BIOS version is used in the computer, and in the event that two SATA disks are installed at the same time relating to various SATA generations (in this case, the second The disk may not be determined). In some cases, in some cases, it may also have an incorrect configuration of the BIOS options, incorrect or non-accurate disk connection using data cables or power. The user is not insured and from hardware failures in the operation of the disk controller, as well as in the work of the SATA host adapter, located on the motherboard. In recently, the problem can be corrected, as a rule, only by contacting the specialists of the service center.

Hard disk - the main device of your computer or laptop. It contains an operating system that runs the machine. Also there are all your data. Without it, it is impossible to imagine the work of electronic computers. Therefore, it is necessary to handle it carefully and carefully. After all, when you exit this part, you can lose all your valuable information.

However, it often happens that your BIOS does not see the hard disk. This is influenced by a number of factors. First of all, it is necessary to check the correct connection of the device with the motherboard. Pay attention to the voltage feed cord that comes from the power supply. If there are no problems with this, then try connecting your hard disk with another board controller. It also makes sense to replace the interface or power cable. These are rare cases, but they are.

Another thing so that the BIOS does not see the hard disk due to insufficient power or malfunction of your power supply. Therefore, it is worth paying attention to this nuance. In the event that the BIOS does not see the SATA hard disk, try to change the adapter with the IDE. Do not forget that for the operation of IDE devices in your bios, support must be enabled.

Navigate to the advanced settings where you select the configuration of the connected devices. Here you can activate the controller for IDE-Winchester. Do not forget to leave and save changes. If your systemic has already installed equipment with a new SATA interface, but you still have the need to connect another hard disk with the IDE interface, the procedure described above is also required.

Pay attention to the fact that the IDE and SATA devices you need have enabled. The maximum allowable number of IDE devices cannot be more than two per controller. If you have two connected, and the BIOS does not see the hard disk, try to disconnect one.

Also in my practice there were such devices that no circumstances wanted to be displayed as subordinates. Even the BIOS does not see the hard disk if you incorrectly installed the jumper, which is responsible for the operation mode (the master, subordinate and the device defined by the loop). Look for a start, whether it has it at all. If so, then on the top of the disk there must be a proper inclusion scheme.

These are the main problems that may arise with good hard drives. I want to pay attention to the fact that very rarely bios does not see the SATA hard disk. With these devices almost never arise. If you still encounter them, try more to change the cable and go to the factory settings of the bios. If it does not help, you need to check the device itself.

I hope you understand what you need to pay attention to first. As a rule, all these methods work and help. If you do not work, and the device is still refuse to work, contact special service workshops. There will be able to determine the exact cause of the problem and whenever possible will be returned to the life you need a hard drive. Under no circumstances attempt to disassemble it yourself.

Hello, friends! Yesterday I collected a new computer to a friend and wondered why the BIOS does not see the hard disk. After I figured out this problem, it turned out to be jumped. But there are other cases when the hard disk is not defined in the BIOS and in the operating system, I will tell you about the decisions of these issues in this article.

Before you know why BIOS does not see the hard drive and what to do, I would like to say that the reasons may be somewhat. I described them even below, so read carefully.

Disk drive does not rotate;
The hard disk is installed on the BIOS, but not included;
SERIAL ATA drivers are not installed / incorrectly;
There were problems with the hard drive;
Not connected / damaged data cable;
On the case of the jumper drive, it was not empty.

To identify the cause of the fault, it will be necessary to carry out the full and consistent diagnostics of all computer nodes. About how it is better and faster, I will tell now.

What to do if the hard drive does not rotate

Visual overview rotation / not rotation of the disk You can not see, unfortunately. It remains only to guess about it through some indirect signs.

Turn off the computer from the network and open the cover of the system unit.
Now we turn on the food and listen carefully. If you touch the side wall of the hard drive and vibration will be felt - everything is in order, the disk rotates.
If there is no characteristic noise and vibration, you can enable and disconnect the disk power cable and compare the results. If at least somehow changes the noise, then the disk works.

Hard disk is not enabled / incorrectly connected to BIOS

An indication of this will appear when the computer is turned on at the bottom of the screen. However, the instructions appears only on a short period of time, and if you miss this moment, you will have to turn off and turn on the PC and wait for the input to the settings category.

Now on the settings screen it will be necessary to find a hard drive that is not detected. What is written in front of him? In theory, automatic detection should be indicated - Automatic. If you have off (off), then switch to automatic detection. It happens when a new hard drive is installed with a connected SATA interface.

Many users use a disk drive on which their Windows OS files are stored for storing their data - photos, music, movies, documents, etc. However, it is impossible to store your data on the same disk as Operation. Because of this, problems often occur with the installation of drivers and the BIOS therefore does not see the SATA hard disk.

Insert the Windows disk into the DVD tray.
Disconnect your computer from the power supply.
Insert the SATA hard drive, plug it.
Include computer power supply.
When the installation process begins, you can click on F6 at any time - and then the driver installation will be launched. If the installation goes as it should be, then at a certain point the inscription will appear that the missing driver is required for the correct installation. You can not skip this moment, otherwise everyone will have to start anew.
Soon there will be an interface for downloading drivers for the SATA controller. Click on S.To continue the installation.
You will need discs with installers of various drivers and programs. They can be downloaded in advance from any sites.

Jumper drive

Look more carefully, and you will see that the scheme of the correct arrangement of the jumpers is on the housings of all drives.

So, what if the data transfer cable is incorrectly connected or defective?

Open the system unit and look at the plumes that stretch to the motherboard and the Winchester. If any mechanical damage is thrown into the eyes, then everything is clear - the reason for them.
Due to the vibration during the computer, the SATA cable may simply fall out of the connectors. It is best to check the reliability of fixing all cables.

Hello came to you with a problem. We decided to update the computer, but not all, and the main components: the motherboard, the RAM, the video card and the power supply, all this safely established into our old case. And now the problem, our BIOS is not in it's a hard disk and drive, both IDE interface devices remained from former computer And we did not change them, the master in the service center connected both drives to our new motherboard with one IDE loop, since the IDE connector on the motherboard is only one. Brought a system unit home and when you turn on the computer, only a black screen, go to the BIOS, there is an inscription: PRIMARY IDE MASTER NO DETECTED and Primary IDE Slave No Detected. Would go back to the service, but we do not live in the city. What can you come up with?

BIOS does not see hard disk

Such a situation comes across to me quite often, probably before your hard drive and the drive were connected to the old motherboard, with the help of individual loops, to two different IDE connectors and both worked in the main position, that is, Master. In the service you simply connected two of your device for one loop, and about the jumpers forgot, now both of your devices work in Master mode, because of this conflict and as a result BIOS does not see hard disk and drive too.

In our article, we will work with a hard disk and the IDE interface drive, if you have little experience, how to connect and disconnect and what errors you can occur with you, read in more detail if this article does not help you, try one more, in it Described.

Where you gathered a computer, hurried a little and now we will try to fix everything. IDE interface devices need to be configured with a jumper, it will prompt your computer how to properly access the drives (and disk drive). Computer when working with IDE devices, it is very important to know who is on one plume by the main Mas Ter device, and who subordinate slave is solved small. Contacts on which the jumper is satisfied, are directly on the drive. Instructions for the arrangement of the jumper, is usually on the storage case. Turn on the computer and go in, first of all you need to make sure if the IDE controller is enabled in the Integrated Peripherals tab.

We are convinced that power cables are connected.

In my article, we will adjust the jumpers first of the Seagate hard drive, then to acquire the Western Digital and Maxtor Winchester experience, Sony Nec Optiarc will appear as a drive. Pay attention to the exhibition. I also have a similar problem, BIOS is not in it's a hard disk Both drives, both devices are not defined by Primary IDE Master No Detected and Primary IDE Slave No Detected.

From the very beginning, we look at the jumper on the Sony Nec Optiarc drive. According to the instructions located on the storage case, the extremely right Master position, which means the drive is already connected with the jumper as the main one. Best to connect the main Master device by the end of the loop.

Now go to the hard disk, the seagate hard drive is also connected as Master, two main devices on one plume is an inevitable conflict.

The result of both devices in the BIOS position no detected. Let's avoid conflict of devices and leave our drive as a master, and the seagate rigid disk connect as a slave slave. We look at the instructions and see that the seagate hard drive works in the subordinate mode at all without jumper, we remove the jumper at all.

We see if everything is connected correctly and turn on the computer. The result is obvious, both devices were found and decided. Now we also connect the hard drive Western Digital.In BIOS, everything is perfectly determined. Behind him is a hard drive MAXTOR, too, everything is fine.

Many may notice, and if the hard disk connects to the end of the loop and make the main-master, and the drive in the middle and subordinate-slave, because a more important device is connected to the connector at the end of the loop, you want to do so, after all, the hard drive is more priority to us. Then the main thing is not to recycle very much the train itself, not wisely, it will look like that of you, approximately as in the symbol.

Brakes the hard disk) how you do not connect them. And what in our case? We look at the BIOS, the speed of our Sony NEC Optiarc -UDMA-4 DVD Roma-4 is most likely a seagate UDMA-5 Winchester will work in UDMA-4.

What am I so? But what if you have a completely old drive, it is better not to connect it with one loop at all, since the speed of both devices will be quite low, most likely to PIO, so draw in this case to a new one.

While turning on the BIOS computer checks its hardware for performance. If the hard disk has physical damage, the BIOS does not see it. Accordingly, the monitor screen will notify that the hard drive is not found.

Causes of the error "Winchester not found"

If the BIOS does not see a hard disk, the problem may be covered both in the hardware breakdown and in the software. However, among the most common it is worth highlighting:

Hard disk disabled in BIOS;
Hard disk damaged;
Winchester is incorrectly connected;
Jumpers of the hard disk are incorrectly exhibited.

Such reasons are characteristic of HDD drives. However, if you have an SDD, then in some extent the presented tips will also be applicable for the hard drives of this type.

Incorrect connection of Winchester

If the BIOS does not see the hard disk, the problem can be wounded in the incorrect connection of the loop to the motherboard.

Open the side cover system Block And check all the cable to connect.

IMPORTANT! If a sATA cable It has a length of 1 meter, it must be replaced with a shorter, since a large length is the cause of frequent failures in the operation of the OS.

Customize jumper

If you have two hard drive on your PC and you are using an IDE interface, then the hard drives can be installed incorrectly jumpers. It is they indicate which drive "presenter", and which "slave". Therefore, we look at the rear stronment of the hard drive and see the instructions for connecting.

Also worth paying attention to the temperature of the hard drive. If it overheats, you need to establish it cooling or put an extra cooler.

Checking BIOS settings

Any PC component turns on and off. In the event of an emergency completion of the system, the changes in the BIOS settings can be made without the knowledge of the user. Therefore, if the BIOS does not see a hard disk, you should double-check the settings of the first. To do this, click "Del + F2" during the first seconds of the PC reboot. Go to the "Main" section and see the "SATA Configuration" parameter. Its value must be "enabled". If the value is different, press the arrows and choose the desired one.

Often, the owners of the computer have problems with a disk recognition. This is engaged in the BIOS environment. It is responsible for setting up the motherboard and search for equipment connected to it. Allocate several basic problems why BIOS does not see the hard drive:

Physical damage HDD;
Connection problems with the motherboard;
Factory defects assembling hard drive;
BIOS settings.

Physical damage to Winchester

Basic problem: damaged jumpers

Hard disk hard damage unintentionally. If after assembling the computer or laptop stopped seeing the HDD, it is necessary to check it on external damage. First of all, you need to study his jumpers, as their breakdown is most frequent problemThrough which the hard disk is not defined in the BIOS. The jumpers are located on the back of the carrier. Problems prominent by the naked eye: the jumper can get into the way, partially or completely and disappear, oxidize.

If the hard drive on a laptop or computer is new, then it must be returned to the store for replacement. If the carrier has long been used, then you will have to change it.

If the jumpers underwent the oxidation process, then the problem on the computer can be solved in two ways:

Gently treat the jumpers with a special solution that takes off rust. You can purchase a toolic in a specialized store;
Clean the jumpers with sandpaper. In this case, it is necessary to be extremely careful. One incorrect movement and hard disk will have to change.

Problem: external physical damage

When conducting an inspection of the surface, it is often possible to identify external physical damage. Of the following types of defects are often found:

Damage to chips on an unprotected HDD board;
Defects of the outer corps;
Violation of parts work. For example, a motor.

When detecting defects, it is necessary to estimate the amount of damage. Conduct the procedure from specialists or yourself. If the disk is suitable for repair, it should be given to service center. If not, you have to acquire a new one.

Connection problems with motherboard and power supply

Problem: SATA loop faulty

With incorrect connection of the HDD disk with a motherboard, difficulties of reading information on the computer may occur. After checking external defects, the train must be tested. It must be integer and tightly lay down to jumpers from the other side. Wires must be isolated.

When the loop failure is detected, it must be replaced with a new one. If it is found that the train is loosely adjacent, it is enough to solve the problem.

Interruptions in the work of the device often arise due to the fact that several connectors are busy in the SATA plume. It is important to check how many ports are connected to one loop.

Select a separate SATA loop under each HDD disk.

Problem: Lack of Electric Power

Due to the insufficient power of the power supply, the hard disk may not be enough energy to work, so it is not recognized by the BIOS. It is necessary to check the quality of the connection of the wires leading to the block. There is also the likelihood that the power supply does not cope with large quantity devices.

If the power supply wires are faulty, they must be replaced. If the power supply does not cope with a large number of devices. It is recommended to replace it.

Incorrect BIOS configuration in Windows

Problem: Winchester search functionality is disabled

Often bios computer stops seeing HDD due to failures standard settings. There are many reasons for this: power interruptions, installation of new equipment on a laptop, infection with viruses of the Windows operating system.

First of all, when starting a computer, you must go to the BIOS. Depending on the motherboard exist various combinations The keys for inputs that are displayed on Windows at startup. Once in the BIOS, it is necessary to check whether the functionality is connected to detect an HDD disk. To do this, select the Integrated Peripherals item in the menu and find the ONBOARD IDE CONTROLLER partition, opposite which is the inscription: Enabled (enabled) or Disabled (Disabled).

If the Onboard IDE Controller is the ENABLED mark, then problems with a hard disk. Otherwise, change the status of HDD.

If a this procedure It is not yet helped and the hard disk is still not determined, then you need to reset the BIOS settings to the factory. To do this, turn off and de-energize your computer or laptop. After that, on the motherboard we are looking for a battery round shape of a silver color.

Convert with something hard enough. We take it out of the computer and wait for 20-25 minutes. Insert the battery back.

Comment. Do not be afraid that when resetting the BIOS to the factory parameters, the driver settings will be shot down. They are not connected with the BIOS environment.

Factory defects

Problem: factory marriage, imperceptible outward.

If all previous ways did not help, then it is worth thinking about the presence of factory defects. In this case, the external inspection, the BIOS setting and checking the loop will not give results. Usually such problems arise with just purchased hard drives. Therefore, it is necessary to save the check until the expiration of the warranty period so that it does not arise difficulties with the return of poor-quality goods to the manufacturer.

Decision:

It is important to buy hard drives only in proven stores with a good reputation. It is not recommended to purchase HDD discs in dubious companies and in unconscious individuals. If the warranty period has expired, you can pass the disk into specialized service centers.

When problems with definition in bios hard disk You need to be extremely careful and attentive when identifying a problem. The breakdown is often possible to solve independently, resorting to the instructions specified above, but if nothing happens, then the best decision - service centres.

Some users sometimes face that the system does not see the hard disk, and not only connected as an additional device, but also already installed hard drives on which the operating system is intended for loading. What can this be connected and how to eliminate such a problem? Next, several basic solutions are proposed, which in most cases should help. True, you will have to find out the true cause of the failure.

Why does the system sees the hard drive?

As the most common cause of such failures, most specialists tend to call the wrong connect hard Disc loop to motherboard. However, even when proper connection The situation may appear when, for example, the system does not see new hard Disk, although it is working, the operating system is in full performance, the drivers are installed, etc.

Such a problem most often refers to the wrong bIOS settings (This will be mentioned in more detail later). The same situation can be observed in the presence of software failures when the connected device is assigned already used by the system. Finally, the disk may contain errors, and if it is a hard drive from which the start of the OS is possible, may be damaged boot records and sectors to restore.

Physical reasons and ways to eliminate them

Resolving the question of why the system does not see the SATA hard drive (this standard of devices take exclusively as an example), let's start with the consideration of physical problems.

As it is already clear, you must first check the correctness of the connection and the density of the accuracy of the loops into the corresponding connectors. In addition, a very common cause of incorrect hDD works Call overheating of the southern bridge, which is more characteristic of laptops. In this case, first you need to turn off the device and give it to cool.

For stationary blocks possible solution Problems can be an option to reset the settings by extracting cMOS batteries From a jack for a couple of minutes (full reset parameters).

Along the way, a special jumper Clear CMOS should be found on the motherboard, which is usually located near the battery. A jumper first seconds to 15 need to be switched to position 2-3, after which return to the original connection 1-2.

Immediately, it is worth paying attention to the correct Master / Slave connections (the position of the jumpers). Hard disk with IDE interface must have a Master connection, all other devices, including external hard drives or drives optical disks- Slave. This, by the way, concerns the situations where the system does not see the second hard disk. But this is still not all problems.

The system does not see the hard drive: BIOS settings

Another reason for what is not recognized is incorrect specified parameters The primary I / O system BIOS. If when loading the system reports that system Disk Not found, and asks to insert it, you may have another device in the priority of the download.

In the appropriate section, the priority (first) device must select the HDD. If, after that, the system does not see the hard disk, go to the hard drive settings section and in the SATA configuration row, turn off the AHCI mode by setting as the RAID or Standard IDE parameter.

Disc Control Section

But suppose that the main hard drive is recognized and the OS is loaded without problems. The user has connected the second hard drive, but no effect. So why does not sees the system outdoor hard disk? There is a lot of reasons for that, one of which is that the disk is not given a letter.

Such a situation is eliminated: we go into computer management, where we use a similar section for disks. Here will be displayed completely all devices, even if they are not recognized at the initial stage of loading or work incorrectly. Choose disc, I call the submenu with the right click and apply to the line of changing the letter or path to the disk. After that, enter the unused value and save the set parameters. Perhaps you have to reboot.

Problems with driver

Another trouble of many users - missing or wrong installed driversresponsible for the work and installed on the motherboard and an external hard disk.

If the user has a drive with drivers, which must be included in the kit when purchased, there are no problems. Just install (or reinstall) drivers. If there is no such disk, you can use a freely distributed directory or install the program like a Driver Booster, which, when scanning, determine the missing, damaged or updated drivers and automatically integrates them into the system.

Check hard disk and boot record

Finally, the most unpleasant situation is when the operating system from the hard drive is not loaded due to software errors or surface damage.

In the first case, you will need any boot disk (for example, LiveCD or distribution system), after which it will be necessary to call the "R" key and go to command linewhere you first team Chkdsk. C: / F / R Check the disk for errors, and then register the bootrec.exe / fixmboot lines and bootrec.exe / fixboot (this will fix boot records). If this effect does not give, you need to overwrite the boot sector, using the BootRec.exe / RebuildBCD command for this. If the problem was really connected with such a situation, after restarting, the download will go in normal mode without failures.

In the case of mechanical damage, the hard drive will have to be replaced. Although it is argued that restore damaged sectors can be using hDD programs Regenerator by moving the disk, it can hardly believe it.

Conclusion

Finally, it remains to say that for cases when the system does not see far from all solutions, since it is simply impossible to provide for all situations. However, all the above meets most often, therefore, depending on the situation, one or another technique can be applied that will eliminate the problem.

Here, intentionally did not consider problems when the hard disk is not determined by the system due to viral impact (this is also found), because the protection of its own priority computer should be for any user. Also not affected issues related to incorrect disk partitions to sections or its formatting. Well, when the Winchester, what is called, began to "raise", another solution, except for the replacement, is simply not.