I'd really like to know what's going on here.
Thisis an HP PC with Windows XP/SP3 "worked fine before..." then, after many months of flawless performance, the PC started up ok, got the XP splash, then the screen went black - no further activity. It SOUNDS like it's running, but there's no action on the screen. Could get boot choices with F8 but could not get to safe mode. I got "last known good configuration" to work once, but the PC went black again after a few minutes.
I tried HP PC Recovery (accessible through the POST screen) and got the system back, but it went to a black screen a few seconds later. I even got the CD key and reinstalled XP to ANOTHER HARD DRIVE and entered the CD key from this PC and that also went to a black screen after a few seconds. HOWEVER - note that it stays up for as long as necessary to install the system.
This is an HP Pavilion A705W with nothing changed but the HDD, 1GB RAM (512 twice), XP Home/SP3; I can provide any other details that might help. Can something be affecting the HDD and, if so, where can it be lurking? I await enlightenment.