Every time I O/C my 4200, I enable the start up box. But when I restart my machine the settings return to default. All I am using is the coolbits in the registry. I am not using any third party o/cing tool like rivatuner. A friend of mine is having the same problems with his g3ti200. I am using the 29.42s. Any help is appreciated. I always run it o/ced and I'm tired of resetting it.