I inherited a PC from my brother in law recently.The rig setup is as follows:
Antec 180 case
PC Power and Cooling 610W supply(connected to mobo via 24 and 8 pin)
Intel Core2Quad Q9550 2.83Ghz chip
Intel desktop motherboard DX38BT
2x2Gb Patriot 1333 DDR3 RAM
Sony Optiarc CD/DVD drive(PATA)
AMD Radeon HD6670 1Gb GDDR5 128 bit video card
2x 640Gb WD HD’s(WD6400AAKS)
Windows Home Premium 64 bit OS
The computer randomly reboots. It will go for hours to days running fine and then reboot. This isn’t a new symptom, as it randomly rebooted even after my brother in law first built the system.
What I’ve tried so far:
I scanned the RAM chips with Memtest and they came out fine. I replaced the video card(an NVIDIA 9800GT). I replaced the power supply with a 650W Seasonic X650. None of those things has worked.