I am trying to install windows on an HP laptop. I get the error, "Windows cannot install required files". I do not have recovery discs. I do have the Windows 7 product key. I attempted to install Home Premium from here: http://www.heidoc.net/joomla/technology-science/microsoft/14-windows-7-direct-download-links. I got the error message. I also tried with a Pro version, and go the same error. I then tried installing Ubuntu, and it gets stuck at the Ubuntu loading screen. I am thinking that this is more of a hardware issue. Is there any way to confirm this?