單項選擇題

A technician has just installed a new power supply into a desktop computer and now the computer will not turn on. Which of the following is the MOST likely cause?（）

A. The voltage selector switch on the power supply is set incorrectly.
B. The 3.3v power line is connected to the wrong input on the motherboard.
C. The new power supply voltage rating is too high.
D. The 12v power cord is installed incorrectly.

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單項選擇題

A legacy PCI IDE controller card does not recognize a new IDE HDD. Which of the followingmaintenance techniques would BEST resolve this situation?（）

A. Perform a BIOS upgrade
B. Update the IDE controller's firmware
C. Format the HDD on another PC
D. Update the IDE controller's driver

單項選擇題

In order to ensure there is proper airflow in a new computer, which of the following should be performed?（）

A. Install a passive hard drive cooler.
B. Unplug the redundant power cables from the motherboard.
C. Install rounded IDE cables.
D. Drill holes in the PC's case to create more airflow