sweet, thanks for the advice guys. I'm gonna try a ram diagnostic too. My RAM came with a fan, I ran it for a while, but I removed it because it seemed unnecessory. maybe i should put it back on.

I have a recurring lock up issue with my PC. It only seems to happen when I'm playing a game(has happened on DA:O and ME2). It locks up and the only thing that works is the reset button. However, when I reset, it locks up on the boot screen. Two different things seem to help:

1) Shut it off and come back after awhile or
2) Dissconnect and reconnect my SATA cables from my hard drives

The wierd thing is it won't happen for weeks at a time, and then it starts up again.

Things I've tried:
1) New hard drive
2) Formatting hard drive

I've checked temps in the bios screen on startup and CPU temp is about 50 Celcius.

Here's my system:
EVGA 680i motherboard
Intel Q6600 2.40GHz proccessor
2 GB of Corsair RAM
Antec 600W PSU
BFG 8800 GTX single graphics card
WD 150 GB hard drive
Hitachi 320 GB hard drive
NO Overclocking

Maybe bad RAM? I had a boot issue before and my solution was to switch my sticks to the other two slots on my mobo. Because it usually happens in the middle of a game, I think its a RAM or overheat issue. Thanks for your help in advance!

I want everybody to list their favorite OH %$#@!!! moments in PC games. Some of my favorites are... (spoilers!!!)

Prey: You walk into a room with a glass case in the center and spend a couple minutes trying to figure out what it is. You walk through the next portal and... BAM! you are in the case!

Half-Life 2: I think its the start of the 3rd to last chapter when you enter the citidel. You walk through a tunnel and when you reach the end you see it (the citidel). That was easily the best part of the game for me, reminded me of something out of LOTR.