220-801 · Question #739
Before beginning hardware repair work on a PC, which of the following is the FIRST step?
The correct answer is B. Disconnect power from the PC. Disconnecting power is the mandatory first step before any hardware repair to protect both the technician from electrical shock and components from damage caused by live circuits.
Question
Before beginning hardware repair work on a PC, which of the following is the FIRST step?
Options
- AInstall an uninterruptible power supply (UPS).
- BDisconnect power from the PC.
- CEnsure all Windows updates have been installed.
- DDegauss the monitor.
How the community answered
(18 responses)- A6% (1)
- B94% (17)
Why each option
Disconnecting power is the mandatory first step before any hardware repair to protect both the technician from electrical shock and components from damage caused by live circuits.
Installing a UPS protects equipment from power outages during normal operation and is irrelevant to the immediate safety procedure before opening a PC for repair.
Removing all power from the PC eliminates the risk of electrical shock and ensures no active current flows through components during handling; subsequent safety steps such as wearing an ESD wrist strap are only meaningful after power is disconnected.
Ensuring Windows updates are installed is a software maintenance task with no relevance to hardware repair safety procedures.
Degaussing removes magnetic fields from older CRT monitors and is an outdated, unrelated procedure that has nothing to do with pre-repair electrical safety.
Concept tested: PC hardware repair safety - power disconnection first step
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