My keyboard is locked so that when I press shift it uses the small colored symbol instead of the usual one it would use. How can I change it back

Hi! Do you have a program on your computer for writing in foreign languages? Sometimes they'll have special coding to indicate letters with an accent.

If no, then have you checked to see if all you "fn lock", "num lock", or your "alt" buttons for being jammed or accidentally turned on? If that's the case then turn them off.