Error 0x0000007B INACCESSIBLE_BOOT_DEVICE

Error 0x0000007B INACCESSIBLE_BOOT_DEVICE typically occurs when the Windows operating system is unable to access the system partition or boot device during startup. This issue can be caused by a variety of factors, including corrupted boot files, incorrect BIOS/UEFI settings, driver issues, or hardware problems.

Here are a few steps that may help resolve the issue:

1. Check the hard drive connection

Ensure that all cables connecting the hard drive or SSD are securely plugged in. If you've recently installed a new drive or transferred the system, it's possible that there was a connection or configuration issue.

2. BIOS/UEFI settings

Go into the BIOS/UEFI settings and make sure the correct drive mode is selected: AHCI or IDE, depending on how your system is configured. If you've made any recent changes, try reverting them to their original state.

3. Boot into Safe Mode

Try booting into Safe Mode. To do this, press the F8 key multiple times during startup and select the appropriate option. If the system boots in Safe Mode, the issue might be related to drivers or device configurations.

4. Boot repair

Boot from a Windows installation disk or USB drive. Go to recovery mode and select "System Restore" or "Startup Repair". Run the automatic repair to fix any issues with the boot files.

5. Check system file integrity

While in recovery mode, open the command prompt and run the following command:

chkdsk /f /r

This will check the drive for errors and attempt to fix them.

You can also run:

sfc /scannow

This will check the integrity of system files and repair any corrupt files.

6. Update or reinstall drivers

The problem could be due to corrupted or outdated drivers for your hard drive controller. Try downloading the latest versions from your computer or motherboard manufacturer's website.

7. Use a system restore point

If the issue appeared recently, you might be able to resolve it by restoring the system to a previous working configuration using a system restore point.

8. Reinstall Windows

If nothing else works and the problem persists, you may need to reinstall the operating system.

These steps should help you diagnose and resolve the issue. If nothing helps, you may want to check your hard drive or SSD for physical damage or consider replacing it.