Why does the computer not see the SSD drive in Windows? Why does the computer not see HDD? Your computer does not see HDD? Such a problem has occurred at least once for every active user of a laptop or stationary device, and therefore some standard solutions have already been invented that can help. A hard drive (screw, hard drive) is a device that stores all information (including the operating system).
First you need to determine whether the hard drive itself has broken down or if the computer simply does not see it. To do this, remove the recording devices from the computer and connect to another. If he doesn’t see it either, then most likely the problem is in the hard drive and you need to take it either to service center warranty service or other similar professionals.
If another computer "recognized" it, then copy all the necessary information to another device (just in case). And start solving problems, most of them you can fix yourself. For example, contacts in the system do not work well - reconnect each of them in turn.
An error in the BIOS settings, go into it by pressing F2 while turning on the computer, if it does not work correctly, then pull the battery out of it for a certain period of time (the settings will be reset to standard) - and the BIOS should see the hard drive.
Several hard drives of the same brand can give such an effect. Try turning them on one by one.
The article describes the most common reasons why the device does not see hard drive. If these tips did not help, take him to a specialist and after a short period of time he will tell you what the reason is, whether it is critical and if not, how to eliminate it.
Surely, many have come across a situation where Windows 7 does not see the hard drive. For most, the thought immediately comes to mind that the part burned out or something else. But, as practice shows, this is not always the case.
There are many reasons why the OS may not see the hard drive. Let's look at the most basic of them.
Problems in the operating system
Almost always, when Windows 7 does not see the second hard drive, the problem is in the OS itself. As a rule, in order to connect a new device, the system must detect it and configure it. Almost always, new hard drives are connected and configured automatically. But, in rare cases, this does not work.
It's not a problem. All of this can be customized.
Go to the menu "Start" - "Administrative Tools" - "Computer Management".
This will open the Computer Management program.
Here you will need to click on the "Disk Management" item on the left.
Look at the list of devices. If Windows 7 does not see the hard drive, then it is possible that these local partitions do not have letters. As you can see, the screenshot indicates that there are two sections: "C" and "D".
If this is not the case, then right-click on this local partition.
Click on Change Drive Letter or Drive Path.
Here you can set up and change the path to your local drive the way you want.
Hard drive not partitioned
It is also possible that your hard drive is new, and it is not divided into sections. That is, it is not formatted and not broken.
Do all this, and then you can use this device.
Contact issues
Often, the problem is precisely in the contacts that connect the devices inside system block. Each hard drive is connected by two "wires". One is needed to power the device, and the second is to transfer data to the motherboard.
This is what SATA cables look like. 
They are needed to transfer data from the hard drive to the motherboard. But, in addition to data transfer, a power cable is also connected to the device.
In the Foto:
Left power cable;
Right – SATA cable;
If the hard drive is turned upside down, it will look like this.
Older models of hard drives use ATA connectors. Surely many have seen them.
essence this method in that it will be necessary to pull out all the contacts and re-insert them. There might be dust in there. So take them out and blow them out. And then put them in their place.
Turn on your computer and watch. If this is the problem, then the hard drive will be detected by the system and will work as before.
Windows 7 does not see external hard drive
There are also situations when the OS does not see external hard drives. In such cases, you need to try to reconnect the device. It is also recommended to connect the hard drive to different connectors, and not just to the same one.
If all else fails, then check the integrity of the USB cable and USB connector. It is possible that one of these is corrupted and therefore no data or power is being transmitted.
Hard drive burnt out
In the worst case, when all options have been tried, you should think about the fact that the hard drive may be out of order. Maybe he burned out. Disassemble it. Remove the fee. Maybe something burned down there. In this case, it must be taken in for repair.
Most users create partitions on their hard drive for their convenience. They are commonly referred to as C, D, etc. and their usefulness cannot be denied by any means. Let's say you have an operating system on one volume, and all other user files (music, photos, movies) on the second. When you reinstall the OS, the partition with your files will not even be affected, which will allow you to save the data and continue using it already in new Windows.
One of the extremely common problems that users often encounter is that the computer does not see the hard disk partitions and cannot find them. This problem occurs unexpectedly and can be caused by a number of reasons that affect the operation of the hard drive. Let's figure out what to do in this situation and how to solve the problem.
Letter assignment
If your PC or laptop does not see one of the hard disk partitions, then the first step is to go to the special control menu and check if it is displayed in the corresponding list. If it is there, then it needs to be assigned a letter.
Let's go through the process one by one:
The requested information will be instantly displayed on the screen. Must View local drives, and if there is a missing one, then you need to specify a letter.
To do this, you need:
For the changes to be successfully applied, you must restart your computer. As soon as the operating system boots up, check if the partition is visible, it should appear under the letter you specified.
Create a new volume
It is likely that by entering the control menu you will not find the missing area, instead of it there will be an unallocated part that cannot be assigned a letter, you can only create new volume:
But at the same time, you will completely lose the files stored on it. Therefore, if you do not value them, then feel free to use this way, in other cases I recommend using the method discussed below.
All processes are divided into Windows example 7, but in other versions, Windows XP/8/10, they will be similar.
Create a new section
If the first method did not help and the computer still does not see the hard disk partitions, then the problem may be that the OS itself cannot see it due to the loss of the file system, as often happens, while the data on it will still be saved.
In this case, to remedy the situation, we will use one very effective tool, namely the Acronis Disk Director program. With its help, we will recognize the disappeared local partition of the hard disk, separate a small part from it, from which we will make a new area with file system NTFS and then just merge them.
This may seem very complicated to some, but if you follow the following instructions, which describe in detail what to do in this situation, you can easily cope with this task:
After you create a section, all that remains is to merge the problematic and new sections using the "Merge" function.
Now you need to save the changes and reboot the system. To do this, you need to enter the BIOS again and return the boot to its original place - from the Hard Disk. After exiting the BIOS, the system will automatically boot into Windows OS. We check the disk partition again, now it should definitely display correctly.
Partition Recovery
In almost all cases, when a logical partition of a hard drive disappears, it can be returned. For recovery, we will use the same Acronis Disk Director.
So how to do it:
The procedure for recovering information from a partition that the PC has stopped seeing can take a significant amount of time. The duration of the process depends on the amount and amount of data available on the disk. Therefore, you should be prepared for the fact that it is possible that the computer will work for a long time.
We hope that the solutions we have listed are easy to perform, and you can use them to fix the problems that have arisen.
Video: How to solve the problem of unallocated space in Windows 10
Some users sometimes encounter the fact that the system does not see the hard drive, not only connected as an additional device, but also an already installed hard drive, on which the operating system is intended to be loaded. What could be the reason for this and how to fix such a problem? The following are some basic solutions that should help in most cases. True, you first have to find out the true cause of the failure.
Why does the system not see the hard drive?
As the most common cause of such failures, most experts tend to call the incorrect connection of the hard drive cables to motherboard. However, even when correct connection a situation may arise when, for example, the system does not see new hard disk, although it is healthy, the operating system is in full working order, drivers are installed, etc.
This problem is most often associated with wrong settings BIOS (this will be discussed in more detail later). The same situation can be observed in the presence of software failures, when a character already used by the system is assigned to the connected device. Finally, the disk may contain errors, and if it is the hard drive from which the OS is started, it may be damaged boot records and sectors to be restored.
Physical Causes and How to Eliminate Them
Resolving the question of why the system does not see a SATA hard drive (we take this device standard only as an example), let's start by considering physical problems.
As it is already clear, you should first check the correct connection and tightness of the loops entering the corresponding connectors. Moreover, a very common reason incorrect work HDD is called overheating south bridge which is more typical for laptops. In this case, first you need to turn off the device and let it cool down.
For stationary blocks possible solution the problem may be the option of resetting the settings by extracting CMOS batteries from the socket for a couple of minutes (complete reset of parameters).
Along the way, you should find a special Clear CMOS jumper on the motherboard, which, as a rule, is located not far from the battery. The jumper must first be switched to position 2-3 for 15 seconds, and then return to the original connection 1-2.
It is also worth paying attention to the correctness of the Master / Slave connections (the position of the jumpers). hard drive with IDE interface must have a Master connection, all other devices, including external hard drives or drives optical discs, - Slave. This, by the way, also applies to situations where the system does not see the second hard drive. But this is far from all the problems.
The system does not see the hard drive: BIOS settings
Another reason that is not recognized is incorrectly set parameters of the BIOS primary I / O system. If during boot the system reports that the system disk is not found and asks to insert it, it is possible that another device is set in boot priority.
In the corresponding section, the HDD should be selected as the priority (first) device for booting. If, after that, the system does not see the hard drive, you should go to the hard drive settings section and disable SATA configuration settings in the SATA configuration line. AHCI mode by setting the used option to RAID or Standard IDE.
Disk management section
But let's assume that the main hard drive is recognized and the OS boots without problems. The user connected a second hard drive, but there was no effect. So why does the system not see the external hard drive? There are many reasons for this, one of which is that the wrong letter has been assigned to the disk.
This situation is eliminated simply: we go into computer management, where we use a similar partition for disks. Absolutely all devices will be displayed here, even if they are not recognized on initial stage downloads or work incorrectly. Choose desired disk, right-click to call the submenu and access the line for changing the letter or path to the disk. After that, we enter an unused value and save the set parameters. You may need to reboot.
Driver Issues
Another trouble for many users is missing or incorrect installed drivers responsible for the operation and installed on the motherboard, and external hard disk.
If the user has a driver disk, which must be included with the purchase, there is no problem. Just install (or reinstall) the drivers. If there is no such disk, you can use the free directory or install a program like driver booster, which, when scanned, will identify missing, corrupted or updated drivers and automatically integrate them into the system.
Checking the hard drive and boot record
Finally, the most unpleasant situation is when the operating system does not boot from the hard drive due to software errors or surface damage.
In the first case, you need any boot disk(for example, LiveCD or system distribution), after which you will need to press the "R" key to call and go to command line, where first chkdsk command c: /f /r check the disk for errors, and then write the lines Bootrec.exe /FixMbr and Bootrec.exe /FixBoot (this will fix the boot records). If this also does not work, you need to rewrite the boot sector using the Bootrec.exe /RebuildBcd command. If the problem was really related to such a situation, after the restart, the download will go in normal mode without failures.
In case of mechanical damage, the hard drive will have to be replaced. Although it is claimed that the restoration bad sectors possible with the help HDD programs Regenerator by remagnetizing the disk, it's hard to believe.
Conclusion
Finally, it remains to be said that for cases where the system does not see far from all solutions, since it is simply impossible to foresee all situations. However, all of the above is most common, so depending on the situation, you can apply one or another technique that will eliminate the problem.
Here, problems were not deliberately considered when the hard drive is not detected by the system due to virus exposure (this also occurs), because protecting your own computer should be a priority for any user. Also, issues related to incorrect disk partitioning or formatting were not raised. Well, when the hard drive, as they say, began to “crumble”, there is simply no other solution than replacement.
Hello dear friends!!! In this article, I want to talk about why after - does not see a broken hard drive. I didn't just decide to write this article, there were just a lot of questions about this, of course there is a lot of material on this topic on the Internet, but still people ask questions and I think that it will not be superfluous on my site.
Why the hard disk is broken during the installation of the operating system, the answer is simple, for the convenience of storing files, so that your data and files are not crowded on the same partition with windows, so that you can install programs and games on a separate hard disk partition thus touching the section with operating system. IN in general terms I think everyone understands what all this is for. So let's get started.
Let's go in the process windows installation 7 You have partitioned your hard drive into two partitions. Your first section C"on which you install the system, and the second partition" D» on which you will install games, programs, upload photos and files in the future. After installing the system, you go to "My Computer" and see only the section " C", and the section" D The system does not see the hard drive. What needs to be done so that the system sees the second partition of the hard disk? Right-click on "My Computer" and select the "Manage" tab. A window will appear where you need to select the "Disk Management" tab.
You will see such a window where your hard disk partitions will be displayed.
In order for the section " D" was visible in "My Computer", right-click on the second partition and select the "Format" tab. Attention: After formatting, all data on the hard disk will be deleted.
After formatting is completed, you will need to set a letter for this partition, if you do not set a letter, then the system will not see a broken hard drive. See the screenshots below for how to do this.
