When playing CS:S, my computer sometimes resets. I'll be playing, and pop, restart, without any warning. I've been playing source games since feb, and this only started happening recently (like in the last month). I updated my video drivers (from catalyst 4.1 to 5.4) and my motherboard drivers, neither worked. If I close all unneccessary background apps, it will usually last longer before resetting (up to half an hour or so). So.. anyone have any ideas?

Specs: Sempron 2600+, VIA somethingorother mobo, radeon 9600 pro, 512mb ddr400.

Are you positive its only occurring during CS/S ?

My dad forgot to update his windows and got a worm that set his machine to periodically reboot.

Perhaps you have a similar incident.

Perhaps its a sign you should show more respect to HL2DM.

Seriously, is it only CS/S ?

orph: I'm pretty sure its only during source games. CSS is the only game I play nowadays... I'd play on the snarkpit server if people were on there when I play of course.

Lep: Straight after a reboot, I can usually play it for a while before another reset (about the same amount of time as the previous go). Security log is empty, system log shows a few disk warnings and an atapi warning around when I was playing... hmm. The disk warnings all say an error was detected during a paging operation, and the atapi warning says ideport0 has old or out of date firmware. I'll run a virus scan.

I downloaded an app that monitors temperature (no money spending!), it says my cpu is at 48C right now. If I can figure out how to make it log temperatures to a file, that might sort this out.

(will virus check soon i promise...)

Well, I monitored the temp while playing css between rounds, when I started playing it slowly went up to 52C and stayed there... then after a while it turned itself off. I had to go to the wall and turn the mains off and on again to get it started (it sometimes does that instead of resetting). When it was booting, I went into the cmos and it said the cpu temp was 60.5C. Once I got into OS the app i dled said 50C (it had a little flame next to it :/ ) and since then its cooled to 48.

I think you might have it maze... if its not temperature then its probably that.

Well, I removed the side panel, and both the cpu and board temps are at 43 degrees. I dont have a case sensor... presumably that would be about equal to the surrounding air temp unless there was something seriously wrong. I'm considering getting a case fan (if this helps the problem that is), would that help much?

With the side panel removed, I got about an hour and a half of gameplay. Then it hung on a blue screen (not a normal blue screen, just plain blue), it wouldnt respond so i hit reset, checked the bios, the temp was 50C.

I think I just have to find a way to stop it going over 50. And I dont have any other cpu intensive games installed atm... :/ I suppose I should try some.

I'll try what Loco said, and I'll see if I can find a way to monitor gpu temperature (if its possible). Thanks for all the help guys.