Hi, I have a question if anyone can help please. I have a compaq computer running XP home edition. went to boot up the other day and it got as far as the "windows is loading" screen then the monitor went black and "no signal" flashed up. It then started to boot again until it got to the above screen and just went round in circles. Wouldn't boot in safe mode either. Had to press F10 key. Did a diagnostic check which said everything was fine. Had to restore back to factory settings. All seems fine now but am concerned in case it happens again, especially as I don't know what caused it.