You can see the desktop yeah?
Right click, and go to Properties. You will probably still be able to see that. Click on the Settings Tab; you will proberly be able to see that too. Tab 7 Times, which will take you to the Resolution Ticker; then move it Right for a couple of seconds, keep your finger down, so it goes as far as it will. Press Enter.
That should do it. Although, maybe it would be easier with Safe Mode? Don't know.
A Knight is sworn to Honour. His heart knows only Virtue. His blade defends the helpless. His might upholds the Weak. His word speaks only truth. His wrath undoes the Wicked.