I want to know if this is an issue with my PSU or what. I am running 500 watt ocz psu with 2 hard drives, dvd drive, a radeon 6950 graphic card, and a newly installed sound card. After playing around for a few hours with my sound card settings with zero no problems, all of a sudden my window froze. I shut down my computer and restarted it, but to find out only the fans turned on and no beep or anything, just a black screen. I took out my sound card for a little bit and reinstall it and my windows booted up normal again. What causes my computer to just show a black screen and fans running while booting? Is this a sign i need to upgrade my PSU? or whats the deal here. My computer is running right now no problem, but I am a little worried it might happen again, please help. Thanks