Expert Troubleshooting Tips to Repair “0x0000007B” Error?

Your Windows PC includes all kinds of crucial components to meet your computing requirements. It provides you a secure environment to ensure that all your stored information remain safe on your PC. The regular updates from Windows help you to keep your computer updated. However, sometimes you may receive blue screen errors on your computer after making any BIOS changes. In this blog, you will come to know about the blue screen error “STOP 0x0000007B INACCESSABLE_BOOT_DEVICE” and methods to fix it on your PC.

Blue Screen error often appears on your screen once your PC faces a fatal system error. The error may occur due to the corruption in registry entries, outdated or inappropriate system drivers, etc. In this situation, there is a chance of losing all your stored information from the computer. So, you require taking an immediate action to fix this problem before it causes further damages to your PC.

Read below to know about the PC troubleshooting steps that you can perform to fix this common blue screen error on your Windows 7 or Windows Vista PC:

Symptoms of the Error

On a PC running Windows 7 or Windows Vista, you may receive this error after changing the Serial Advanced Technology Attachment (SATA) mode of the system's boot drive. After changing the SATA mode of the boot drive to AHCI specification or RAID features in your computer BIOS, you may receive the following error while restarting the computer:  

“STOP 0x0000007B INACCESSABLE_BOOT_DEVICE”

Causes of the Error

The error may occur due to the disabled disk driver on PC running Windows 7, or Windows Vista. So, you need to enable the disk driver before changing the SATA/RAID mode of the boot drive.

What to Do Next?

Once your PC gets stuck due to this blue screen error, you may need to contact a certified computer technician to get rid of it. The technicians will help you to fix this problem quickly through a secure channel and thus prevents further damage to your computer parts. However, if you don’t wish to spend your money on local technicians, or a computer support services, then you can use the troubleshooting steps mentioned below to fix your problem. 

PC Troubleshooting Steps You Can Perform to Fix This Error

Before you change SATA mode of the boot drive, you need to enable the AHCI driver in the registry editor to fix this issue. However, making any incorrect changes to the computer registry may cause some serious problems to your computer. So, first you need to create a PC registry backup. Refer the two stages given below to know how to create a registry backup, and then how to enable the AHCI driver:

STAGE 1:

 

Create a backup of your computer’s registry. Use the following steps to create a registry backup:

1.    To create a registry backup, click the ‘Start’ menu.

2.    In the search box, type “regedit.exe,” and then press ‘ENTER’ on your keyboard to open the ‘Registry Editor.’

3.    In the ‘Registry Editor’ window, select the registry key or a subkey you are trying to backup.

4.    Now, click the ‘File’ menu, and go to the ‘Export’ button to open the ‘Export Registry’ dialog box.

5.    In the dialog box, choose the location to save your backup copy, and then type the name of a file in ‘Filename’ box.

6.    After selecting the location and typing the file name, click ‘Save’ to create the registry backup.  

STAGE 2:

 

After creating the registry backup, you can enable the AHCI driver. Use the following steps to enable the driver:

1.    Close all Windows based programs, and then click the ‘Start’ menu.

2.    In the search box, type “regedit.exe,” and then hit ‘ENTER’ on the keyboard to open the ‘Registry Editor’ window.

3.    The User Account Control dialog box appears before you, then you need to click ‘Continue’ to proceed.

4.    In the ‘Registry Editor’ window, try to locate either "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci" or "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\IastorV" subkey.

5.    Once you find the respective subkey, click on it.

6.    Now, in the right pane, go to the ‘Name’ column.

7.    In the ‘Name’ column, right-click ‘Start,’ and then click ‘Modify.’

8.    Now, type ‘0’ in ‘Value’ data box, and then click ‘OK.’

9.    Click the ‘File’ menu, and then click ‘Exit’ to quit the ‘Registry Editor.’  

After applying the troubleshooting steps, you may be able to change the SATA mode of the boot drive to either AHCI specification or RAID features. However, as stated above, you need be very careful while performing these troubleshooting steps because any incorrect changes to PC registry may cause PC malfunctioning. If you are having trouble while performing the troubleshooting steps, then you can also take help from a reliable computer technician to fix this issue.

Conclusion

In this blog, you have learned some basic troubleshooting steps to fix a common blue screen error on a PC running Windows 7, or Windows Vista. If the error message still appears on your PC screen, then you can visit Microsoft’s official website to download and run the Microsoft’s ‘Fix it’ to resolve this problem on your computer. If nothing helps, then go ahead and connect with an online computer support helpdesk to fix such annoying and time-consuming PC issues.