The method to access BIOS varies form PC to PC, usually it is accessed by starting your PC, then on the manufacturers logo screen on startup, repeatedly press the F2 or Del key.
However, if you have Windows 10 installed, if that is installed in Legacy BIOS mode, if you enable TPM, then Windows will not boot up correctly, I need to check your system.
Click your Start Button, then just type msinfo and press Enter, please provide a screenshot of the resulting System Information window.