I recently transfered my 9800 (flashed with pro bios) and my audigy 2 ZS sound card to a different computer. The computer powers a amd64 3400+, 1gb of ram, 1 hard drive, 1 dvd drive, and the recent graphics card and sound card I put in. The computer originally had a fx5200 and no sound card. Keep in mind this computer is made by compaq. While playing World of Warcraft today (second day since installing the new componets), my screen went black and the computer crashed. I turned it back on and all was fine again. My question is: Does a lack of power cause this problem? It only has a 300 watt psu and it is the one that came default in the compaq computer. Is 300 watts enough to power everything I listed?