The ONLY way to get into BIOS is to load into Windows 10 and follow these steps:
- Settings -> Update and Recovery -> Recovery -> Advanced Startup/Restart Now
From there select:
- Option/Troubleshoot -> Advanced Options -> Startup Repair
Once 'Startup Repair' is selected the computer will reboot and the BIOS options will be available. However, once you load into Windows 10 again it will lock you out of all of the boot up options once again.