ok ill do that memtest at night. but i was looking around too see if i could find the problem. i dont no if this will help but. i open my game up in a window. and leave my task manager on the side so i can see the CPU usage. what i noticed is that when i click on the game window i get 100% cpu, when i click of it i get 7% cpu. i look in processes and the game says it only takeing 17% CPU, and there something called "system Idle Process useing up 97%. but when i click on the game window the Process Idle drops to 80% and the game stays at 17% but i still get 100% CPU usage.. this sound kinda confusing but do u under stand.?. it seems like System Idle is showing me how much CPU i have left. but im not sure.