My CPU is overheating which in turn is causing my computer to turn off. At first i thought that it could of been the cpu fan going bad but it doesnt sound as though it is damaged (but i do not know the Proper RPM for the stock fan for the Athlon XP 2200 - My speed is about 3750 RPM's). But i also noticed that the power supply seemed to be very hot and i was wondering if it was a possibility for the power supply to be getting so hot that it is causing the CPU to overheat. When i went into the Bios i noticed that the -5v rail on the power supply was reading 0.0V. Is my power supply damaged or could it be my CPU fan, or did the faulty power suppy damage the CPU fan? Thanks for the help in advance! Ryan

none of your rails should read 0.0Volts. if your fan is working at 3750RPM, its deff not the fan. what is the recorded cpu temperature? what psu are u using? i'd try another psu.

I wouldn't worry about the -5v reading zero. The probably isn't a sensor reading that value as -5v is not used in modern computers. It was only ever used with some older types of memory. What does the BIOS say about CPU temperature? The power supply itself will cut out if it get to hot. Check the power supply fan is still working. Download and run speed fan. This will monitor the CPU temp and fan speeds while the CPU is under load. The BIOS reading can only ever be a rough guide as at the time the temperature is taken the CPU isn't doing much. http://www.almico.com/speedfan.php Stuart

Post your temps from speedfan, but if your PSU is getting hot, then it's probably inadequate for your system, and that would certainly cause instability and random shutdowns. Gigabyte GA-K8NS Athlon64 3000+ Venice E6 250x10 Zalman CNPS7000B-Cu LED 2GB G.Skill PC3200 ATi X800XL 256MB AGP 120GB WD IDE/250GB WD SATA SB Audigy Lite-On SHW160P6S/SOHC5236V