Final answer:
To check a computer boot problem, a technician will run the Power-On Self-Test (POST), a built-in diagnostic tool within the BIOS that tests hardware components at startup.
Step-by-step explanation:
When a technician wants to check a computer boot problem, they will often utilize the Power-On Self-Test (POST). POST is a built-in diagnostic test that is part of the system's Basic Input/Output System (BIOS). When a computer is powered on, POST will check the hardware components to ensure that everything is working correctly and that the necessary hardware is present for the computer to operate. If a problem is detected, POST will typically emit a sequence of beeps or display a code indicating what the issue is, which helps the technician diagnose the problem.