Here is the number to call HP Support/Repair facility. 1-800-652-6672. Have your serial number available as they will need this to set up a "case" number with your details. They will then be able to tell you what the requirements are for sending the unit in for repair if necessary. I know that you will have to have a CC in order to send your unit in. However they will not charge it until they verify a repair cost with you. I will add that they are efficient in picking up the unit, repairing and getting it returned to you.