Hi,
Mares has a 2yr warranty against any manufacturer defect for the computers. If you are the original purchaser, and purchased from an authorized Mares dealer within the last 2 years with receipt, I would take it to the dealer. They can send it to Mares for evaluation and then Mares will either repair or replace. I can honestly say, the Puck computers have been a very durable and stable unit, although with any electronics it is certainly possible that something has happened and you have a valid claim.
I hope this helps.