Hello. I have a Panasonic cf-52 tough book. I had Linux on it temporarly and used DBAN to wipe the hard drive because I wanted to run Windows 7. I used Rufus to create a bootable USB drive. When I set the top boot option to USB hard disk and reboot the PC, all that happens is that a line flashes in the top left corner. Anyone know what I'm doing wrong? Thank you so much.