Bootcamp xp starts up with blackscreen

Hi all

Its my first post/question, so here it goes

My bootcamp was running fine and all for months till yesterday, where suddenly bootcamp xp crashed from browsing a youtube video, i restarted the mac and press alt to enter the windows partition, but its just black screen and nothing else, plain black screen.

I searched over a couple of forums and apple support, i reseted the PRAM and SMC like many suggested, but the screen is still black. However after the PRAM and SMC reset, when i enter the partition, i can hear the windows xp starting like it normally does, i.e. the music, but the screen is still pitch black, thus the problem still exists.

I have no idea what to do, but the display works fine on mac, its just bootcamp that the display seems not to work

Any help would be grately appreciated

Thanks