JSI Tip 4948. You receive a Stop 0x0000007B error after You move the Windows system disk to another computer?

Microsoft Knowledge Base Article 314082 contains the following summary:

This article describes how you may receive a Stop error when you try to start the Microsoft Windows XP-based backup computer after you move the system disk to a backup computer. This issue occurs when registry entries and the drivers for the mass storage controller are not installed in Windows XP. To resolve this issue, use the same hardware in the backup computer.