Back screen with mouse after update of Windows 2012 DC

I was doing some update to our GPO to network drives remotely when the update prompt with count down timer came up. I closed the dialog and continued to work on the GPO. When I disconnected and wanted to resume my work, the server wouldn't let me login. I figured it was updating and let it restart. when it was back up again I logged in as admin from there I am welcomed to a black screen and mouse cursor. CTRL-ALT-DEL doesn't work at this point. The mouse is responsive as in it moves but nothing else works. What gives? How do I fix this so that I can gain control over my server again?