open gl based games freeze

i’m having a problem. before i upgraded my motherboard i had been using a PCI geforce4 mx420 on a pentium3 550 Mhz and was working fine. but when i got my new mother board with pentium4 2.0 Ghz and 512 RAM, i’ve been running into problems with any game that is based on openGL. i used to be able to play Soldier of Fortune 2 but it now freezes unexpectedly. Same thing goes for any of the half life games. i am using the latest driver (41.09 i believe) and have tried reinstalling the drivers multiple times. i have no idea what to do next. Anyone have any idea whats going on here?