I recently just gave the inside of my comp a good clean out, using an air duster to get rid of the vast amount of dust in there. Since then, occasionally on boot up, after all my hardware has been verified and stuff, XP fails to load and I get a black screen which is unresponsive. My computer is still on, the green power light on the case still being on and my monitor is active (not in standby etc). When this happened the first time I just restarted, and then it happened again. Then after another restart XP loaded and everything is normal again... I also recently installed new nVidia 7 series drivers for my GFX card, but this was after it happened the first time so may not be relevant.
Anyone got any ideas, if you need anymore info just ask, thanks,