8 Hardware Troubleshooting Practice Free Online FlashCards

What is the core principle of hardware troubleshooting?

Identify the fault using evidence and controlled tests, rather than replacing parts at random.

What precautions should you take before opening a desktop case?

Shut down and unplug a desktop before opening its case, follow the service instructions, and use electrostatic-discharge precautions.

Why test one hardware change at a time?

Change or test one component at a time, then record the result so you can connect the evidence to the change.

What should you inspect for heat-related performance problems?

Check that vents are clear, fans spin freely, and the CPU cooler is installed and connected to the correct fan header.

How can you distinguish a suspect RAM module from a suspect slot?

Test one module at a time in the recommended slots. If the failure follows a module, that module is suspect; if it follows a slot, the motherboard or CPU memory interface may be involved.

What should you do before intensive testing of a readable suspect drive?

Copy important files before running repair or intensive diagnostic tools, while the drive is still readable.

Does a spinning fan prove that a PSU is healthy?

No. A spinning fan does not prove the PSU is healthy; other suitable tests may be needed to isolate a power fault.

What can a motherboard diagnostic light tell you?

A status light points to an area to investigate, but it does not always identify a failed part.

How can a printer’s own test page help diagnose a printing failure?

A printer’s own test page helps distinguish a printer-side problem from a computer or connection problem.

What should you record when describing a hardware symptom?

Record what happens, when it happens, and any warning lights, beep codes, messages, unusual sounds, or recent changes.

Why must you never open a power supply unit?

Never open a PSU; it can retain a hazardous electrical charge even when unplugged.

How should you verify a hardware repair?

Repeat the activity that caused the problem, confirm the error has cleared, and check that disconnected components still work.