Here's the deal:

I cleaned a hard drive of some viruses (externally) and put it back into the original pc. This hard drive will boot in any other pc except the original pc. When I try other hard drives in the original pc, they are able to boot. The drive has Windows XP.

What is the problem? How can I get this hard drive to work properly?

• The original hard drive works in other PCs.
• The PC boots with other hard drives acting as the master.
• If I boot with no hard drive, I still can't get into the BIOS
• These are all IDE hard drives
• The PC doesn't beep, it just boots into a black screen with a cursor blinking in the upper left of the screen