Hardware and BIOS/UEFI Essentials

Construct a block diagram of an x86-64 laptop platform showing the CPU, memory, chipset, embedded controller, SPI flash, TPM, storage, and major buses.

Trace a laptop motherboard’s transition from mechanical-off state to firmware execution using power, reset, and power-good signals.

Interpret a basic motherboard schematic excerpt containing component references, net labels, power rails, and active-low signals.

Classify a startup fault as a power, POST, firmware, bootloader, storage, or operating-system failure from its observable symptoms.

Use POST indicators, firmware messages, and operating-system logs to refine a hardware fault hypothesis.

Collect a baseline hardware and firmware inventory with Linux system utilities.

Design a safe diagnostic plan that preserves user data and provides rollback points before low-level work.