Iam having problem with XPS 420 and swat4 Runtime Error and says abnormal program termination

and then thats it. Ive seen that some other players with new XPS system have the same problem but i didnt see an answer on hot fix other than trying to disable some DLA what is this any way?please help going to try to in stall new driver from nvidia i have 256 geforce 8600.Q6600 2.4 gig 320 gig hard drive,3 gig of memory