I was away on vacation when my gf was on my computer. she said it started to freeze up then just froze, she had to disconnect the power plug and it wont boot up.does not even show bios.when i turn on the power all the led's light up n the fans start moving but nothing comes up on the monitor i tried a different gfx card and no luck.I was wondering could it be my motherboard or cpu.i had installed a after market cpu fan and noticed recently it had started spinning harder by it self.

If you have the xp disk, try this http://www.microsoft.com/windowsxp/...

Tried but still nothing showing up on monitor not even bios,so can not tell if it is booting from cd

I have tried taking the ram out,and the mobo beeps. so im guessing it is still working. i have tried putting a gfx card into it and that did not work. so im guessing cpu is broke