game crashes

hi, i really need help cuz GW crashed today alot of times and maybe its my specs? specs:NVIDIA GeForce FX 5200, 1ghz,512mb ram. so is it my specs? or is it maybe the virus scanner i have running while playing GW? i really want to play GW without crashing so how do i solve the problem? p.s. if its the wrong section or its agains rules then close it.

i have a virus on pc maybe thats why but dont close thread yet, when i have scanned everything tommorow and it doesn't crashes anymore then it can be closed cuz im not sure if its the virus.

In English please!