Honestly if all else fails. You can try a manual BIOS factory reset. That's if you can get into the laptop and if the CMOS battery can be removed.
Power down the system, unplug all power bricks, open the laptop and remove the CMOS battery and hit the power button a couple times to drain any remaining system power.
Wait a few minutes, plug the CMOS battery back in and attempt to boot.
If it works, you may need to go back into BIOs and reset and date and time. Also may have to change to your boot devices\types.
Hopefully it can revert to defaults. If not, you may have bricked your BIOS. Its like getting half way through a Windows OS install then turning off the PC. The software is only half installed now, it wont be able to function.