Hey everyone. So basically I'm trying to install Windows 7, more specifically Windows 7 Ultimate 64-Bit, but this little issue is halting everything. It won't let me progress unless I insert a driver disk or something of that sort for a CD/DVD driver, which I don't have. I've tried the USB port swap method, I've tried disabling all of the USB 3.0 slots, (which I now have re-enabled), and various variations of those things. I have no other ideas, and I have to do this for my computer to work. What do I do? This is on a new ASRock B250M-HDV motherboard with it's default, out of the box BIOS, (no drivers yet), and the Windows 7 copy is on a USB. Thanks.