ROM
Read only memory
Information not erased when PC is shut off
UEFI
Unified extensible firmware interface
Configures utilities that every system needs
-device drivers
-boot support
-system startup
-all on motherboards ROM chip
BIOS
Basic input/output system
Used interchangeably with UEFI
CMOS
Complementary metal oxide semiconductor
Writable specialized RAM hooked up to a small battery to keep it working when PC is off and unplugged
TPM
Trusted platform module
POST
Power on self test
Relays issues via beep codes