On a compaq D150, i installed a different hard drive (same model to the won previously installed). The hard drive already had an OS already installed (windows xp). After, switching on the computer, i found that it displayed a black screen. I attempted using windows xp repair install to fix the problem but to no avail.
I'd appreciate any help anyone may have regarding this matter.
Unfortunately, your best bet would be to install a clean version of XP on the system and to not try to "recycle" the previous install. However, will the system run in safe mode? If so, you may be able to salvage the install. In safe mode, try re-installing the video drivers to see if that clears up the issue.