Hello everyone, I've been scanning through the posts on this forum for a little bit hoping to find a remedy to my problem but i've come up empty. I finally built up the courage to ask for help in a new post... here goes. I recently bought a new video card... upgrade from an onboard radeon xpress 200 and a new PSU to power it but ever since I've put them in, ive been getting random black screens during games like World of Warcraft and Call of Duty. It has never happened outside of a 3d game and it seems to happen more often in certain areas of these games. I usually have ventrilo running while playing World of Warcraft and when these black outs happens, I can continue to talk to people on ventrilo but I lose all visual and control of the game. Not sure what else information I can give. Here are my basic system specs: Motherboard AMD Athlon(tm) 64 Processor 3500+ - 2.2gigs SAPPHIRE Radeon X1800XT 256MB 2Gig Memory 400Mhz 500w Thermacare PSU I've ruled out the possibility of overheating by reading other threads and using methods suggested to test out the video and system temperatures. I've also tried to keep the case open to see if it would help and it had no noticable effect. The video and BIOS drivers are both up to date as of yesterday. Any idea what may be causing this?