i previously had a geforce2 64mb. the system freezed often. i bought a radeon 9550, but after i install the drivers and reeboot, prior to entering windows, the monitor goes into standby. if i boot in safe mode, it works. if i uninstall the drivers and start windos normally, it works. i think it could be a compatibility problem with my motherboard: a jetway 663as pro. any suggestions?