My PC keep shutting itself down for apparently no reason. It can shut down when I'm doing something, or when I just leave it alone. My system is newly built, an Athlon 64 X2 3800 +, with ASUS A8N-SLI deluxe mobo, ASUS Neo HE 550W, BFG GEForce 7800 GT, and Audigy 2 sound card.
CPU temp is 37-40 ish degree, and motherboard temp is abt 33. video card GPU core temp runs abt 40 degrees.
Can anyone please help me with this? Thanks

what is your power supply.
who is it made by?
is everything connected properlyHp Pavillion a1010n
Celeron D 340 2.93Ghz
512Mb of Ram
64Mb onboard Video Memory
Asus P4GV-LA Motherboard
160Gb Seagate Hard Drive
DVD/Rw+CD/rw burner & Reader
sorry I mistyped, but I am using an Antec Neo HE 550W
Maybe this can help you out.
I got this information from another site...ok.
If it shuts down when you turn on your computer then open up Notepad.exe and type in shutdown-a and save it as SHPREV.BAT then put it in your startup folder. If it doesn't do that when you turn it on do the same steps but put it in the desktop instead of your startup folder and then when ever it starts counting down then double-click SHPREV.BAT and then it will stop shutting down and you can continue what you were doing...Angeliux
I also got this answer...
This guy had the same problem and he suggest this...If it has a countdown you're being infiltrated by a trojan.exe.horse which means that you need a firewall. Download imesh from imesh.com and download norton firewall 2003 not 2004.Angeliux
Thanks, I'l try those steps, but there's no countdown or warning in my case. The PC also runs well for some time (between 1-3 hours) and then it just shuts itself down immeadiately, with no warning or countdown.
This dosent sound like spyware but who knows. Sounds like the power supply to me. Check the fan+connections. thedon
TaroD, I am having the exact same issue. Because I recently installed new RAM, I suspected the new module was faulty. (Although it ran for 3 days flawlessly) But since then, with completely different RAM installed (the original), my system still shuts down every few hours.
Like you TaroD, my system runs fine for sometimes 3 hours or so, then powers off with no warning whatsoever.
At times i cannot even boot into Windows, as it powers off at the Windows XP loading screen.
I now think the problem has to do with a power consumption issue and I am currently running tests on my RAM modules.
In the meantime, I really really hope the new chip did not screw my motherboard. :(
Anyhoo, keep me updated on your findings and i'll do the same. Good luck.
-Nick
Mine is doing the same thing. It started automatically shutting down approximately once/week in the last few weeks, but today it did it 3 times! Has anyone here investigated further?
Ez folks am havin the same problem, been havin it for about a year and a half and no closer to a solution. It happens so randomly, i'll think i've sorted it cos will be fine for weeks then will suddenly shut down for no reason. this has pursued me from an old machine to a new one which i built to remove this irritation, no idea how this happened as all components are new except floppy disk drive, monitor, keyboard and mouse. I suggest that we each post up details of our systems, when the problem started, any changes made during this period and any error messages we have found, plus details of software being used too. then maybe we can correlate some sort of pattern togethor to figure this out,
