Screen output to non-existent option = black

Hello! I was having trouble getting my Asus laptop display working correctly. It was showing two mirrored displays, when I have just the regular built in screen, and wouldn't let me change the resolution. On the desktop, I right clicked and changed the 'output to' another option, hoping it would fix things. Instead, the screen went black, and now I'm dead in the water.

The screen works in safe mode, but in safe mode I don't seem to have an option to switch it back. Now when I start up my machine NOT in safe mode, it starts just fine, screen works, then I click on my username, and blammo. Black screen.

How do I change the display settings back to the default if I can't see what I'm doing? Currently running in safe mode while I try to figure it out...

Help!