Each valve should have a manual bypass button on the valve itself, usually in the center of the coil. Take a small screw diver and depress the manual bypass for the index fork. See if the fork moves. Then you can do the same with the indexed but be sure you are clear of anything that moves so it doesn't hit you. If the fork and indexer works try to run the machine, if it does it may have just been a stuck valve. If not it will most likely be an electrical problem like a bad or misaligned prox, loose wire, relay, etc.