I have as Asus Socket 939 motherboard, Enermax 460 Watt PSU, and XP is on a 74GB Raptor. Usually when I start up, it would take a long time for the bars to go away, the harddrive (I think) would start making a beep-click noise, and then it would just be a black screen. I'd have to force-shutdown and restart, and it asks me how to start up the system: Safe mode, last settings that working, or normally. Usually I'd choose last settings or normally, and eventually it would start up fine. Just before, I kept trying this like 8 times and it wouldn't start up. I chose "Safe mode with networking" and it did something, then it went back to the same choice screen and I chose "normally", and it started up OK. I don't even think I'm in safe mode right now.. how can I tell? It may just be a coincidence that it worked. What can I do about my startup problem? Can it be my PSU? What about my BIOS settings? I experimented with that a little.