Deleted boot option priorities in bios

[Ninerlopez69]

I'm hoping someone out there can help me recover my laptop. I have a asus-15.. x551ma laptop. I had accidently deleted the wrong boot drive. When I went to save and restart, that's when it dawned on me to not save and exit. But it was to late. It done restarted and screen just stays dark. It powers on z, Just screen and keyboard and USB ports are useless. Just power let works.is there a way to clear it Or reset the motherboard. Thanks if someone can help