I replied several times to the emails requesting S/N, P/N, purchase date, etc to register care pack. It never showed up in HP assistant and I was told it would once the original year expired. Expiration date was 10 May, and now shows out of warranty. When I try to do the "Check warranty" to dispute it, it comes up and says I need to enter a real serial number. I am entering the serial number that is on the computer!