Just incase this ever happens to you...

I was in the middle of working, typing along like crazy, and then all of the sudden my screen went blank....and when it came back, it was sideways!!! I tried to fix it but gave up and just shut down. I thought that maybe when I started back up, it'd be normal, but no go. So, thank goodness for Google. SO.....if you accidentally hit a bunch of keys and end up with your laptop screen staring back at you in a new portrait landscape, Ctrl-Alt-Arrow will get you back to normal viewing. :)