Blank Advanced BIOS screen?

Awjbartlett

Commendable
Nov 10, 2016
2
0
1,510
I just got an Asus P8B75-M mobo with an i5-3570 that I'm running with a gtx 660 and without a case.
I'm using a PS/2 mouse as the usb ports aren't working (probably due to 'fast startup' being on which disables USB ports until booted into the OS). This would be an easy fix, however whenever I click on advanced BIOS, I just get a blank advanced bios splash screen. So I don't have a keyboard, I can't use the usb ports to flash and I've already cleared CMOS multiple times.
Anyone know how to fix this?

http://imgur.com/a/k58ZV