Second day after receiving the HP tower the hard disk died. It made repeated clicking sound. I contacted support and they agreed that it is the hard disk and that they would send another hard disk.I bought the HP may 16; it is now June 6 and I don't think I'm going to see anything anytime soon.Attached is a picture of the hard disk found inside the HP i7 tower with OCT-2011 printed on the Hitachi HDD sticker. 'Hope this is helpful to you.