I may have bricked my computer

Having a huge problem with the Gigabyte GA-Z87X-UD5H Z87

I was running into some issues while trying to install High Sierra and saw a suggestion to switch to the integrated gpu until the installation was done. I did that only to find that my IGPU is shot. Now I can’t even get back to the bios to switch to my gtx 680s. Any way I can reset the bios or switch default gpus without seeing the menus?

Any help is appreciated!