GW black and reset error thing

Well I have been playing GW for 19 months (checked age ingame) only 169 hrs into game...

And up until 3 days ago it would work fine. But now I cant even go an hr w/o my pc going to a black screen during play. There is no mouse or anything so I reset manually with button.

Also sometimes itll be just that im running around in a fight and itll restart the pc by itself.

Any fixes? Tried lowering quality no difference. Let my pc lay open for a bit to cool vid card didnt work. I can play unreal tournament games for hrs and no issues.

I have proph-EoTN

Does this only happen with Guild Wars? Have you any other graphics-intensive program (i.e. game) that you can run for an hour without this happening?

I can run WoW on pretty good graphics (my bro plays on my pc)

UT3 can be played doesnt have best picture but can run for hrs. Can run UT 2004 on al high settings for hrs...

Only games I think can have the highest settings on my pc :s

I can run WoW on pretty good graphics (my bro plays on my pc)

UT3 can be played doesnt have best picture but can run for hrs. Can run UT 2004 on al high settings for hrs...

Only games I think can have the highest settings on my pc :s