As the title says, i have a Pc running windows 7 ultimate (32bit) and lately it has started to randomly freezing or restarting. Systems mother boards onboard video stop working sometime back, installed a Nvidia card and had no problems after that, dont know if its somehow related. Things I've tried -Disk chk -RAM test thats bout it, no new software or hardware was recently installed and i have auto updates off so nothing system wise was changed much. Dont really have any idea where to go from here other than trying a fresh install. I might add that sometimes the system works flawlessly, and can stay on overnight without issue and sometimes it freezes up withing 10mins of starting it. Thanks for the help, let me know what additional info may help.