The main problem is the PC will power off instantly at random. The power supply is about 1 month old and was working flawlessly in a previous P4 system. It is a corsair TX650W and when the computer is booted up all the readings are good. The CPU is a -used- AMD Athlon 64x2 2.6 ghz 65w Socket am2 that has a stuck temp reading. It will run at around 23c on idle on core 0, core 1 is stuck at 93c and will not move on load or idle. It has a pretty good scythe cpu cooler with a nice thin coat of AC5. The cpu temp on core 0 will climb to about 35c on 100% load in prime 95 while core 1 will remain at 93. It wont get past 10 minutes in prime95 without crashing. It will simply power off all the way and has no beeps or errors when i reboot. Some other specs on the PC would include, Motherboard: A760G M2+ RAM: Mushkin 2GB DDR 2 800 MHZ 4-4-4-12 Video Card: ATI 4650 1GB Pci Express CPU: AMD Athlon 64x2 2.6 ghz 65W with Scythe 6 pipe cooler HDD: 320gb Sata, 80gb IDE PSU: Corsair TX 650W single rail @52amps OS: Windows XP 32 bit The interior is nice and dust free and has plenty of air cooling. I'm leaning towards the cpu being the defect. It is the only item i don't have much history on and has a stuck sensor. If anyone has any suggestions on how I can troubleshoot this or what they think the issue is I would greatly appreciate it.