Bvcx

i have a radeon 5750hd and a p35 motherboard. i used to have an nvidia 8800gt, but the off brand company o bought it from factory overclocked it and the memory slowly died until i had to get the radeon to replace it. i also had to upgrade to windows 7 from xp in order to get it to work semi-properly. one problem i am having is that whenever i stop moving the mouse for an hour or so the computer seems to turn off, but when i move the mouse again it tries to turn back on, but the monitor does not come out of idle mode, so i am forced to restart the computer. i have been exploring the ati overdrive and display properties controls for a solution but haven't found one