I've had Windows running via Boot Camp for months now, and apart from a couple of blue screens all's been dandy. I stuck a 1 gig stick of RAM in this morning (purloined from my dad's iMac), booted into OS X and all was well - system profiler recognised it and everything seemed to work. Then feeling the urge to go frag in Battlefield, I rebooted and selected the Windows partition. The XP loading screen came up, but that was as far as it got - the screen went black, although the fan was still going and it made a tuning-off noise when I held the button down. I repeated this a couple of times, but to no avail - choosing safe mode or last working settings made naff all difference. I'd rather not have to reinstall Windows, but it'd be nice just to get it working again. Thanks for any help.