Hello All, I would be greatful for any advice you can offer; here are the specs on the new computer I just put together: ASARock 939Dual-SATA2 MB AMD Athlon64 3500+ CPU WesterDigital 7200 WD800JD 80Gb HDD Aspire ATX-AS520W PSU NEC ND-3550A Drive 1Gig Corsair DDR-400 Ram I got WinXp on there, was installing some software, and weird things kept happening. I kept getting error reports, of the variety that says that the program must be shut down and asks if I want to send an error report to the vendor. This was happening a lot, especially with installation programs that worked on my other computer just days before. Also, I kept getting the Blue Screen of Death telling me that I may have a software or hardware problem, after which the computer would simply reboot, or lock up completely. At this point, the computer has ceased to function entirely. It refuses to boot and I get no POST beep, and I can't enter the BIOS. All the hardware appears to be working and my cooling fans are all functioning, so I don't think this is an overheat, though who knows. I've checked all the connections and they are fine. I just want to know what could have caused me to go from running smoothly on day 1 to dead on day 3. Any help is much appreciated. Thanks.