I just built a system for a friend of mine. The system consists of a Sempron 3300+, 512MB DDR400, Gigabyte GA-K8U motherboard, and some type of GeForce vid card (I can't remember the model). The system appears stable, CPU temp is around 28 C. I installed windows without any issues, until it rebooted and attempted to load windows for the first time. Every single time the windows XP boot screen loads, it is only diplayed for a fraction of a second, barely enough time for the XP logo to flash on the screen, and then I get a BSOD and the system reboots. This happens every single time and I have never been able to get into windows. I put the HD in my computer and XP loads fine. I tried my HD in his computer and the exact same thing happens. I have been over and over the computer and as far as I can tell there are absolutely no problems with the hardware. My friend spent his hard earned money on this computer and it is really upsetting to me that I can't get it to work. I am not new to computer building; this is my 7th or 8th system, though I have been away from the hardware scene and haven't built a system since I built my current PC about 2 1/2 years ago. Any insight would be greatly appreciated.