I'm an idiot.
On a netbook.
Stupidly changed the resolution so that I could download something. Now I can't change it back. None of the options are what it was before and everything's stretched and unmanageable.
And I restarted the comp to see if it helped and can't get back on as me as my user profile has been pushed off the screen.
I'm sobbing with frustration.
It's been such a bad day.