HELP! Sabertooth P67 ROM

Sn4ke_D0c

Honorable
Nov 5, 2013
1
0
10,510
Hi all,

I have a custom PC build with the following specs:

Sabertooth P67 mobo
i7-2600k
GTX770
16 GB RAM
1 x 160 GB SSD (Windows 7 Pro x64)
1 x 250 GB HDD (Linux)
2 x 1 TB (backups, RAID I)
1 x 2 TB HDD

I was playing around with the boot order trying to get the Linux HDD to boot (separate issue), and I changed from legacy ROM to the EFI compatible ROM. Saved and reset (probably stupid). Now when the computer powers on, it gets stuck at the sabertooth splash screen for probably 30 seconds, then it goes to a blank screen with a blinking cursor (which REALLY worries me).

What have I done, and can it be fixed?

Thanks!