This just started a day or two ago. My desktop, which is set to never go to sleep (I use it as a Media Server), is locking up after it is idle for several hours. When I go to wake it up, the monitors, nothing happens. Caps Lock and Num Lock lights do not turn on or off. The only way to get it to come back up is to power it down and back up. As far as I can tell all the drivers are up to date. I did install a new program, just before it started, but have since uninstalled the program without any change.
I work in the PC repair field and built this PC myself. It was operating magnificently just a week ago. I do know it did do several Windows Updates before I installed, the subsequently uninstalled, a new program. Any help would be appreciated.