a new CPU (Intel i5 3.1ghz),
motherboard (ASUS P8H67-M LE),
and 4 gigs of DDR3 RAM (Kingston HyperX 1600).
All other parts stayed the same:
320gig hard drive,
nVIDIA GT430 1gig video card,
wireless internet card,
The problem is now it boots, and goes to Windows XP desktop but freezes after about a minute or so. The CPU fan is still running and the power light is still while the screen is frozen. I haven't reinstalled Windows XP as I want that to be the last resort. I know reinstalling would give me a stable OS platform. I don't think the issue is reinstallation. I went to BIOS and saw that the core temp was about 60 degrees C / 140 degrees F. The CPU cooler is generic and I only have one. Just to test and see if it was getting too hot I put a regular standing swivel fan to blow at the PC and it still froze. Anyone recommend any solution to this problem please?! Thanks.