BIOS / UEFI BIOS (Basic Input Output System) UEFI (Unified Extensible Firmware Interface) Memory Type Instructions EEPROM 16 bit Flash RAM 32 / 64 bit Storage support Master Boot Record (MBR) Max 2 TB GUID Partition Table (GPT) Over 2TB EEPROM - Electronically Erasable Programmable Read Only Memory Non-volatile memory Flash RAM (NVRAM) Non-volatile memory CMOS - Complementary Metal-Oxide Semiconductor Volatile memory EEPROM vs Flash RAM: Flash memory has the advantage of being able to be programmed directly from the device it is used in BIOS / UEFI Common Beep Codes 1 beep All tests passed 1 long, 3 short Video card problem 1 long or indefinite Memory problem Common Startup Keys DEL BIOS / UEFI key F2 (Setup) F10 ESC BOOT (MENU) key F9 F12 FLASHING * UTILITY key CPU / FANS / RAM Integrated Graphics Booting M.I.T. PEG CSM PXE Secure Boot POST Motherboard Intelligent Tweaker PCI Express Graphics Compatibility Support Module Preboot eXecution Environment Intel - Secure Boot Power On Self Test Security / Encryption Storage Power POST Card Links: SGX TPM LoJack AHCI RST RAID PPM Intel - Software Guard Extensions Trusted Platform Module LoJack Advanced Host Controller Interface Intel - Rapid Storage Technology Redundant Array of Inexpensive Disks Platform Power Management UEFI https://www.youtube.com/watch?v=G_qKrJPuAmg&list=TLPQMDkwMTIwMjO5vWne3RAdYA&index=4 Secure Boot https://www.youtube.com/watch?v=ZF1xGdhyUyw&list=RDCMUCCAXBGYIJnScl0IFKXOIlsQ&index=5 TPM https://www.youtube.com/watch?v=E7_0ttXxC2I age support ot Record (MBR) Max 2 TB ition Table (GPT) Over 2TB vice it is used in Secure Boot Remote Access ROM CMOS No No BIOS Configuration Yes Yes Battery Flash RAM CMOS UEFI Configuration Battery 3RAdYA&index=4 OIlsQ&index=5