PC info : Ms windows xp professional sp3 - Intel core2 duo cpu e7200 @ 2.53ghz, 2.0 gb ram, intel g33/g31 express chipset family (dell desktop) nothing is working - it'll boot up at the dell screen then goes to a black screen with a blinking cursor (which I can't type anything) I connected an usb external cd/dvd driver and ran "hiren boot cd" ran just fine - I was able to scan for viruses, check the system - everything is okay. when i disconnect the external drive - back to the problem. can anyone help me??? thank you.