STOP: 0x0000007B Error in Windows XP – The STOP: 0x0000007B error is a common Blue Screen of Death (BSOD) problem that can occur when Windows XP loses access to the system hard drive during startup.
This issue often appears after moving a hard drive that already contains Windows XP into a different computer, or after installing a new motherboard or disk controller. When this happens, Windows XP may not have the correct driver entries stored in the system registry for the new motherboard's storage controller.
Because of this mismatch, Windows attempts to load a storage controller driver that is incompatible with the new hardware. As a result, the operating system cannot access the boot drive and displays the STOP: 0x0000007B error.
Fixing the STOP: 0x0000007B Error
The easiest way to resolve this issue is to download and install the correct hard drive controller driver for your motherboard. In many cases, the missing or incorrect driver controls an ATA, IDE, or SATA storage device.
You can usually find the correct driver on the motherboard manufacturer's website. Once the proper storage controller driver is installed, Windows XP should be able to recognize and communicate with the hard drive correctly.
Other Possible Causes
Although hardware driver conflicts are the most common cause of this error, other problems can also trigger the STOP: 0x0000007B message. These include file system corruption, boot sector damage, incorrect BIOS drive settings, or certain types of malware.
Additional troubleshooting information and possible solutions can be found on the official Microsoft support page:
Microsoft Support – STOP: 0x0000007B Error Information