...boot to Safe Mode and reset the display resolution back to the recommended settings. If neither of these works, you can restore from a backup if you made one.
I changed the res on the AMD icon and I have a fuzzy, lined unintelligible screen. I've restarted, unplugged, yada and still the same. I can't see to do anything. I can boot and f-12 it, but after it loads no go. Any ideas?