Hello friends, I just built me a new computer for gaming. It's a 3.2 MHz (Intel) processor on an Asus motherboard / 512mb of ram / Geforce 6800 OC. I love to play Call of Duty UO / Half Life 2 & Doom 3. However, every single time I try "applying" the graphic settings OR I try exiting from a game the system locks up. Not to the point where I have to reboot. A simple ctrl-alt-delete takes care of it but it’s a major pain, especially since I can’t max out this new video card on my game settings….and I've upgrade to the latest version of Direct 9.0x. Has anybody had this issue before? Could it be the video card??? If anyone has any idea what the challenge could be, I would greatly appreciate it. Thank you, Max T.