I'd wonder if any CD DEMON, Alcohol or other such software was in use.
When I try booting Windows XP, the Windows logo and 'Windows is now starting' screen loads normally, but then immediately afterwards the screen goes blank. There is no blue screen of death, no automatic restart, and in fact the hard drive is blinking. I tried booting up Windows in Safe Mode with Networking and no screen problems occur. I can't run Norton Antivirus while in Safe Mode.
Checking the events log, I found the same error for the several instances I tried booting up (source: sptd; event ID: 4):
'Driver detected an internal error in its data structures for .
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
0000: 00000000 00520001 00000000 c0040004
0010: 000000ef 00000000 00000000 00000000
0020: 00000000 00000000'