A user reports a problem with a PC located in the same room as cement testing equipment. The room has adequate cooling. The PC will boot up but locks up after 5 to 10 minutes of use. After a lockup, it will not reboot immediately.

Which of the following is the MOST likely problem?

A.
The PC air intakes are clogged with cement dust.

B.
The PC has a virus.

C.
The power supply is underrated for the electrical load of the PC.

D.
The CPU heat sink underrated for the CPU.