PC reboots

This is my set-up on a secondary PC and would like to know if anyone can tell me why it reboots at random. I'm usually just web browsing when this happens and not running a ton of apps at the same time. Also, these randon reboots can happen within a few hours to a few weeks.

Antec SX835 II w/ 350 PSU
AMD 2600+ Barton (desktop)
1GB Corsair PC3200 value ram
Shuttle AN35N Ultra mobo
VisionTek Xtasy 9200 64mb video card

How old is the PSU and right before it reboots...do you get a BSOD or any memory errors messages?

Also...how are the system and CPU temps?

PSU is 2.1 years old and does not BSOD or have memory warnings at all. I just ran memtest86 of the RAM for about 4 hours with no errors. Ran Prime95 which I stopped after 8 hours with no errors, either.

Temps are 33 idle and reach around 37-42 when stressing the system or after playing a game.

There could be a ram instability in one of the sectors.

YSJ said:

PSU is 2.1 years old and does not BSOD or have memory warnings at all. I just ran memtest86 of the RAM for about 4 hours with no errors. Ran Prime95 which I stopped after 8 hours with no errors, either.

Temps are 33 idle and reach around 37-42 when stressing the system or after playing a game.

Click to expand...

This could possible be a PSU issue also...check your rails, if possible with a meter...and especially the +3.3v rail...

I just started having issues a few hours ago and just happen to notice my 3.3v line was at 3.2v in windows...so definetly make sure your rails are stable with that old of a PSU...

BTW - mine is going on 3yrs...

Well, I don't have access to a meter but the reading from SiSoftware says my +3.3v is right at that.

Here are my other readings:
+5 @ 5.08
+12 @ 11.48
-12 @ -12.44
-5 @ -3.45