I built an AMD Athlon II X4 with an ECS Black 785 mobo in October 09. The whole sys stopped powering up last August. In a series of long-timey repairs, I finally got all the components repaired (replaced bad PS, and I exchanged the CPU). Now, I can't get past the classpnp.sys in safe mode. I tried booting from my install disk (after everything below), but I bought the OEM System Builder's version, and it doesn't give me the chance to re-install; it stops at the same screen when I load from CD/DVD. I've never made it past the start of the windows splash screen on any attempt. I've tried: Safe mode with networking Safe mode w/command prompt Enable Boot Logging Debugging mode Last known good configuration Disable driver signature enforcement ..... I just can't seem to get anywhere except a blank screen. thanks.