I recently upgraded to the R7 360 on Win 8.1. I have the 15.15 CSS installed. I have the "Turn off display after 15min" active, and a password required to reopen windows. Typically, all I have to do is move my mouse to "wake" Win 8.1 and enter my password. Now, every so often, My LG W2753 will not respond to the mouse movements and will remain in "sleep". To remedy, I unplug the DVI connector, reinsert, and it shows the login screen as it should. My suspicion is that the driver is not doing what it is supposed to and the monitor never gets the signal to "turn on". Can anyone tell me how to fix?