My Computer locks up when idle while on desktop and it does it sometimes when using computer as i disabled the screensaver and it will not go to sleep this just started when i installed a new hard drive.
is that hard drive sata or ide. It may be the sign of a failing hard drive. if your like how is this possible it happens all the time.
And if it is sata there might be something wrong with the sata controller and making it get bad connection or unstable. the only way to fix it if it was the controller was to use ide again or replace the mobo