I too just bought and put together a new rig. GA-P35-DS3L, E6550, 2x1GB OCZ Plat. memory, 8400GS, Cooler Master eXtreme 650W.
Two main problems:
1) It boots to post, then windows loading and crashes at the same point everytime.
2) When i try to go into setup to mess with BIOS, my keyboard...