I was trying to revive an old computer that had its CPU and power supply go out, but I ran into a problem that I can't seem to figure out. The computer is running a: 2.5ghz p4 celeron (replacement) Soyo P4I 845PE Lite Mobo I plugged in a formatted hard drive and booted windows 7 from the dvd drive. I got a boot bcd error 0xc00000e9, which says that windows has a problem with communicating with one of my connected devices. Thinking it had to be either the dvd drive or the hard drive, I tried replacing both. I changed the dvd drive and I got the same error. I decided to pull a hard drive from another computer running windows xp and booted from the hard drive and it gave me a BSOD STOP: 0x0000007B error. I'm out of ideas, can anyone help?