Water will not go into my dishwasher

Question

My dishwasher is 3 years old and has been in storage for 1 1/2 years. I just moved to my new home and my dishwasher hums very loudly and will not take in water. I don't think anything is plugged (we made sure it was all dried out before we put it in storage). The water is hooked up to the faucet correctly, what could be wrong with it?