They have no toll-free phone number. When you call their tech support number you first go thru a series of voice menus and at one point you are asked to enter the model number of the computer. This is not true. I bought it new and it is under warranty until April 20001, a fact that was confirmed by an HP support person. The support person said the problem is either with the power supply or the motherboard and that the person who comes to repair it will have both parts.
Someone calls to cancel the repair appointment.
A part is out of stock and is not expected in until July 3rd. It was not someone from HP because they said to call HP if I had any questions. The name of the company that handles in-home repairs is apparently a big secret. The support person has no information about it and has to put me on hold while she calls the mystery company that handles the repairs. I'm on hold for what feels like an eternity.