command prompt is in the all programs/accessories menu ( sorry for the long delay for me to get back to you...) mine was set at 0 as well and after changing to 2, stuttering problem is gone I can play on extreme settings @ 1680x1050... after checking default, if it is set at 0, then go back and change to 2.. and I am 90% sure your problem goes away.. what is being altered is the file system cache buffer. make sure to right click it and choose run as administrator otherwise you cannot change system settings I hope this helps.. let me know if it works for you