Shoutbox

Ok, so my PC has been turning off when performing fairly intensive tasks such as youtube videos, playing games (TF2 mainly) and erm, etc.

So I thought it was an issue with the graphics card overheating. It's a 9500GT and the operating temperature is up to 105 degrees C. I've been monitoring it for quite a while now, and it does get pretty high (I've seen up to 104), but it has still been turning off without hitting the max temp.

I saw a post on here today about running memtest86 (I was already worried it was a bad sector (or whatever) of RAM). So after burning it and running it after a restart, it gets about 37% through the test and the PC turns off.

So:

1) I'm guessing it's safe to assume it is the RAM
2) I have 2 RAM sticks installed; is there any way of narrowing it down?
3) Is there any way to fix it or is buying new RAM the only (or cheaper/easier) way