Memory..

[tesco]

since onboard video uses the system ram for its memory its most likely a ram problem here, but try clearing the cmos first to see if that fixes the problem.

[Mobas]

Mogadishu, I sure hope that when you were messing around in your friends PC, you had some kind of static electricty protection.

http://www.pcworld.com/howto/article/0,aid,82184,00.asp