Hey there. I've heard you guys have a lot of technical expertise in this stuff. I hope someone can give me advice to kill this crazy problem of mine. I think I have the same problem as the post by pentagr titled "radeon 9800 pro" or something around those lines in the A/V section of the forums. My computer will shut down everytime I turn on a game, like Rome Total War or even Gunbound. Shut down occurs whenever I turn on the visual plugins that you can use with Winamp like AVS. It isn't instantaneous, but takes a few minutes to shut down. It even sometimes randomly shuts down when I'm just browsing through the web. When it shuts down the power light is still on, but everything else is off (eg. all fans turn off & hard drive turns off). The problem just started out of nowhere. I did not install any programs, did not screw around with settings that I didn't understand, did not alter any configurations and did not change any parts. One day my computer just shut down and from then on anytime I accessed anything "graphically intense" it would just shut down. I updated my radeon drivers, still had the same problem and then rollbacked the drivers and still had the same problem. I reformatted. Still had the same problem (so therefore it is a hardware problem). I have two sticks of ram and tried out each of them seperately if the shut down still occured. It still shut down. I swapped my current 350w power supply with another 350w I had laying around. Still had the same problem. I used to have an XP 2000+ processor when the shut down problem first started then replaced it with an XP 2600+ and the problem still happened. I've checked the temperatures before and after shutdown and the CPU is NOT overheating. I'm not too computer savvy, but I got a hunch that the motherboard went bad somehow or maybe its the 9800 pro. I haven't had time to swap out these with someone else's to test them. Someone save me!