about a month back i had a problem where my pc switched itself off.. when i tried powering it back up it wouldn't switch on... i had to unplug the power cable from the back and re-attach it to get it to power back up.. sometimes this would work but sometimes it wouldn't... but when it did power up it would usually switch itself off again pretty much straight away. i was told that the problem may be linked to overheating so i opened the tower to check to see if the cooler fan was still working and it was.. i also thought it would remain cooler if i left the case off but this still didn't make any difference to the problem i went away for a few days around that time and when i came back the problem had amazingly just seemed to fix itself! i have had no problems since until a couple of days back when it switched itself off again! again (like last time) i couldn't switch the PC back on unless i removed the power cable first but this time (unlike last time) when i re-attached the cable it powered up straight away and stayed on. it has now happened a few times and i have noticed it seems to happen when i'm in computer games which leads me to think it may still be a CPU overheating problem. any ideas what the problem is? and how to remedy it? thanks in advance loll

Faulty PSU perhaps also. What is PSU brand/W? What is your CPU temp? Bio Star 2 gig RAM OCZ, AMD 64 3400 Athlon Thermaltak SVKing Case XFX 7600 GT Zalman CNP Heatsink 500W Antec TruPower

PSU= AC Line how do i find the CPU temp?

found it in BIOS Sytem Temp = 32'C/89'F CPU Temp = 50'C/122'F CPU Temp Speed = 2083 RPM the CPU Temp and Temp Speed both seemed to be going up though.

is that normal?

my first thought would be that your PSU is faulty, there are testers out there but the easiest way to check is to buy a new one. if that's not the problem it could be a multitude of other things. CPU overheating, cracked circuit line in mobo, another part of your comp shorting out causing a power spike and your psu is shutting off. Shuttle AN35N-Ultra AMD 2600B-M O/C 2.3Gig Geil 1.5gb 3200DDR Gforce 6800 Ultra O/C UV Clear Acrylic Blue case

Do your know the brand of PSU? Brand of computer? Age of computer? CPU temp is a bit high but not much of a worry. If you are using stock heatsink I would invest in a new one though your overall system temp looks very good. Your system temps should be stable try leaving your computer sit in the BIOS for at least 15 minutes and post back temps. Bio Star 2 gig RAM OCZ, AMD 64 3400 Athlon Thermaltak SVKing Case XFX 7600 GT Zalman CNP Heatsink 500W Antec TruPower