Razer Edge Pro Bios key

I recently got a Razer Edge Pro 128gb model off eBay with some issues. Bad battery of course and none of the accessories. However the biggest issue is the apparently corrupted SSD. This was stated in the ad but I'm not sure how to deal with it. I have tried getting into the bios to set to boot from an external drive but have only been able to get into the bios screen once. Not sure what I did to get in either. I've seemingly tried all the function keys on a keyboard I have plugged in but all I get is a EFI Shell prompt. Does anyone know for sure what key combo gets into the bios screen on this?