For about a year now I have had to restart my computer twice for it to load Windows XP. My boot sequence is correct (, and I don't see any obvious events in the event viewer. But for example if I install an update that requires a restart, I will reboot, but it will just go to a black screen. If I restart again via the restart button on my case, it will boot up fine. The same goes from starting my machine from cold turkey, it will boot to a black screen, I hit restart and it boots up fine.