How can I fix the display on my hotpoint ultima dishwasher?

I have turned my dishwasher on today and the display is blank it normally says welcome and then the program type, but it is just blank and not lighting up, the other lights all come on and the dishwasher works but it's just frustrating! Please can someone give me a nice easy fix for this!
Dishwasher is a hotpoint ultima dishwasher purchased in 2011