Ever since i built my system ive been playing CS:S and been trying to get a hack of 1.6 and CZ. But when Im playin source or HL2 it usually randomly stops and give an error msg "the instruction 0x######### at 0x######## could not be 'read'" , sometimes it just stops and ends up resetting or just stops responding, anyone know the problem?, check the specs, I also have a soundblaster pci sound card which i heard can cause problems.