My 20 month old got to my computer before I did…he banged a few keys before I could get it back…now my entire screen/display is inverted sideways…and occasionally flickers back to being right side up but only for a second… I can’t seem to find a place in the contol panel menu to fix this.. and I tried to restore the settings but it is taking forever. Any suggetions for the quickest way to restore this?