Find out why power supply stability is the first thing to check when troubleshooting random PC restarts with a Kernel Power error, as required for the CompTIA A+ Core 1 220-1101 exam. Learn how power-related issues cause unexpected shutdowns and how to address them.
Table of Contents
Question
A technician is troubleshooting a PC that restarts randomly during operation. Event Viewer shows a “kernel power” error. What should be checked first?
A. Power supply stability
B. Overheating CPU
C. Corrupted system files
D. Outdated BIOS firmware
E. Failing hard drive
Answer
A. Power supply stability
Explanation
A “kernel power” error in Event Viewer typically indicates an unexpected power loss, often due to an unstable or failing power supply, which should be checked first.
A “kernel power” error in Event Viewer indicates the system has rebooted without a clean shutdown, which is most commonly caused by an unexpected loss of power or an unstable power supply. This can result from a failing or underpowered PSU, loose power connections, or sudden voltage drops, especially under load or when new hardware has been added.
Hardware forums and Microsoft documentation consistently identify the power supply as the primary suspect for this error, recommending verification of PSU wattage, cable connections, and voltage stability before considering other causes. Overheating and driver issues can contribute, but power delivery problems are the most frequent root cause for random restarts associated with Kernel Power errors.
CompTIA A+ Core 1 220-1101 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the CompTIA A+ Core 1 220-1101 exam and earn CompTIA A+ Core 1 220-1101 certification.