HIS Radeon Excalibur 9550 se Problem.

I recenlty got ths gfx card, and put into agp slot, it all worked fine untill i installed drivers. i restarted pc and logged in, my screen flickered and then said "video mode can't be displayed" i rebooted in safe and unistalled drivers, then got the newtest version of the drivers, same thing happened, i tried on an old crt monitor, the monitor switched off at exact same point, help would be greatly appreicated, thanks.

 

If it helps iv got one of those too, 128MB version, upgraded to it just to play UT 2004 - worked ok - then started lagging so i updated the drivers, and hey presto! The game was unplayable due to CRAP rendering ect, tried reinstallin in safe mode and normal mode - tried usin generic drivers, bundled drivers, downloaded/updated drives - nothing works, am considering buyin a new card - £70 down the drain!! Not impressed!!! ??????CAN ANYONE HELPS US ??????????? PLEASEEE?????????