Unexpected shutdowns can be caused by which of the following? (Choose all that apply.)

a. Dead short
b. CPU overheating
c. Power supply overheating
d. Old version of Windows

A B C For a dead short[md]shut down system and secure all metal components. For CPU overheating, check fan speed for CPU heatsink; clean fan if it dirty; replace fan if it has failed or turning too slowly; check power management settings and CPU drivers in the operating system to make sure that thermal throttling is working. For power supply overheating, check power supply fan and clean it if possible; replace power supply with higher wattage–rated unit if problem persists.