The most obvious one involves going into the BIOS menu, but there are also hardware options that involve removing and reseating the CMOS battery or moving around a jumper on the motherboard.
If you have ever had to fix a modern desktop motherboard, you might have noticed that the BIOS (UEFI) SPI flash is 1.8V – which means you can no longer use a Raspberry Pi or a CH341 adapter ...