Some Google addon is installed. Uninstall all Google add ons and retest.
My younger brother plays this online game called MapleStory and apparently in the game to attack he has to press Ctrl a bunch of times in a row. However the problem is, whenever you press Ctrl 3 times in a row the num lock/caps lock/etc lights up top stop flashing and the keyboard basically freezes up until you hit Enter. Is there anyway to fix those so the keyboard doesn't freeze up by hitting Ctrl multiple times in a row?