Well, I hope you get it figured out. I'm not exactly knowledgeable enough with graphical settings to know what you must've messed up. You could always reset your options, as an alternative method to fixing your issue.
If a setting is what messed it up, then resetting the settings to default should fix the issue. Might be annoying to set everything how you want it again, but it should at least fix the issue. (In theory, if that's what messed it up to begin with.)
