Hardware Components and Troubleshooting Questions

Covers knowledge of fundamental computer hardware components and systematic methods for diagnosing and resolving device problems. Candidates should understand the roles and characteristics of the central processing unit, random access memory, storage devices including hard disk drive and solid state drive, motherboard, power supply, graphics and audio adapters, network interfaces, and common peripherals. Expect familiarity with firmware and firmware interfaces such as the basic input output system and the unified extensible firmware interface, device drivers, firmware updates, and compatibility and upgrade considerations. Troubleshooting skills include identifying symptoms of failing hardware, interpreting system diagnostics and logs, recognizing overheating and power related issues, isolating component failures through substitution and diagnostic tools, using multimeter and built in hardware diagnostics, interpreting error codes from the power on self test, and diagnosing driver versus hardware faults. Also cover escalation judgement, when to replace versus repair, safe handling and static discharge precautions, data preservation strategies before hardware replacement, and communication of findings to stakeholders or vendor support.