Quote Originally Posted by aay
Well did the advice there help? Particularly the part about changing the boot order. Also try unpluging the machine, holding the power button in for 10 seconds, then putting the power back in and trying to boot windows. I know it sounds strange, but as I recall some others with this problem found that this helped.
No, I couldn't boot to WinXP. Used a bootable CD to try to boot to DOS and DOS couldn't detect my hard disk although it was detected by BIOS. Tried switching the display card to another one and had the same problem.
Apparently Knoppix corrupted my hard disk somehow, and I lost my WinXP's updates. Had to reinstall about 7 updates. Changed my version of DirectX to 8 instead of DirectX 9.0b. Booting to WinXP works (but I didn't find the cause) but it is slow. A black screen shows now when booting.