Can't get Win 7 to load. Need Win 7 not a later version....which I know load easily. Have iso on USB stick, have keyboard on mouse working on boot up. Win 7 starts to install because a USB 3 driver is missing. How do I get this driver installed. Found and install for the driver from Intel but it's a Windows program (put on a different flash drive) so I can't access it from the Win 7 install. So how do I get the driver installed so I can load Win 7???? HELP?? Thanks, Intermez