This video will show you a few fixes for the errors; No Boot Device, No Bootable Device, Boot Device Not Found, Exiting PXE ROM, No Hard Drive, etc. If changing between Legacy and UEFI do not fix your issue, or if you cannot make that change, Stay on this video
FAQ's:
Q: I dont see an option for Legacy.
A: Sometimes Legacy is listed as CSM. Check out the FAQ's on my videos next time! Could help you get an answer faster :)
