will not boot from windows xp pro cd either?? do not hear hard drive spinning, could hard drive have failed ?? about two weeks ago I remove the side cover and clean all the dust bunnies and it was working fine untill a feww days ago ??
1 - Won't boot from the CD: Go into Setup (F2) - Is CD in the Boot sequence ?
You could move it up to 1st (temporarily) and try to boot from there.
2 - How old is the computer ? CMOS battery may need replaced.
(I have seen this cure the message you are receiving)
3 -Try booting with just one stick of memory, then two, etc.