Monitor still in warranty? If so RMA it for a replacement.
First read warranty terms click here AND click here
Next, contact their service people to confirm it's eligible warranty + fault-wise:
Tel: +44 (0) 871 855 24 25
E-mail: [email protected]
If yes to above, complete RMA online at click here
Not absolutely sure if that's the correct procedure, but it's what I'd do if my 19" Hanns-G of 2 years went down. All the best with it :-), G