I have a laptop that I plug a larger monitor into. I was working on a PPT presentation today and going back and forth between the slideshow mode to check quality. When I do so, it pauses, then goes to full screen so I can view. This last time it paused and never went to the full screen so it was frozen somehow, I went into my task manager and it did not show it to even be open. I then restarted my computer (several times), shut down completely (several times) and it still appears to be stuck somewhere. My computer will not allow me to use the large screen (no icons show, font is super small etc) and only acts as if my laptop is plugged in. Any suggestions on how to remedy this would be appreciated.