I just ran into a problem with losing my sleep option and then one of my monitors stopped working. I thought the monitor problem was with the computer, however as I checked everything out I wasn't sure. I tried several things to no avail. Looked at new apps or updates and noticed that one update, OEM - HIDClass - 126.96.36.1992, was installed the day I started having problems. I restored windows to prior to that day and everything started working again. Not sure about the HIDC update, but will not install it for now. Unlike other posts, there was no problem installing this update before, it just caused havoc on my computer.