ok this is getting a little too ridiculous now. just finished building my 650 dollar computer and no optical drive cause those are useless. i take the contents from the windows 7 disc then make it into an iso and put it on a flash drive. put the flash drive into the new pc and yes flash drive is 1st boot priority but it keeps saying reboot and select proper boot device every time. i tried putting the flash drive into my laptop and launching from the usb device but nothing for windows 7 even comes up it justs loads the computer up normally. i also looked into the windows 7 usb/dvd download tool and it says that the iso is supposedly invalid. yes all usb ports are working so thats not a problem. this obviously isnt supposed to be happening and i dont know what to do to fix it. its not an easy fix.