Alienware 17R2 HDMI IN - Windows Update Message On Screen

I hvae been using the HDMI In port to have my AppleTV and it's was working great. Windows 10 had an update and it showed on that screen in overlay. I went back to the PC using the FN+F8 key. Updated my windows. But now the message is still on screen (even if Windows has done all the updates) I can't use the mouse or keyboard to select the button (restart now, chosse a time or Report Later).

I have tried to reboot the Laptop, shutdown the Laptop. When ever I switch back to that HDMI Input I have the Windows Message?

Thanks