Objective 5.1
220-1201Given a scenario, troubleshoot motherboards, RAM, CPUs, and power.
Objective 5.1 sits in Hardware and Network Troubleshooting, which carries 28% of the A+ Core 1 exam. The questions below are original, written from the official objective title above, and each explanation cites the CompTIA page it rests on.
Objective title verbatim from the official objectives. CompTIA exam page ↗
A worked example
Shown solved, with the whole explanation open: this is what every question here carries.
A desktop restarts at random times. The System log holds Event ID 41 with a bug check code of zero and a PowerButtonTimestamp of zero, and nobody held the power button. What is the most likely cause?
Correct.
Checked against learn.microsoft.com, August 2026Concept
Windows records a stop code only when it stays alive long enough to write one. An entry that carries no error data at all describes a machine that lost its feed rather than one that crashed.
Why D
Both values sitting at zero mean nothing was captured before the machine went down, and an interruption at the supply is the documented reading of that pattern.
Source
Microsoft Learn: Advanced troubleshooting for Event ID 41, checked August 2026Event ID 41 isn't recorded or the bug check code is zero. This behavior might indicate a power supply problem.... The power supply is underpowered or faulty.
Now you: objective 5.1 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 3
A user overclocked a workstation and it now stops with WHEA_UNCORRECTABLE_ERROR during long renders. Which action matches the documented cause of that stop code?
Sample question 2 of 3
A technician fits two extra memory modules and the machine now stops with PAGE_FAULT_IN_NONPAGED_AREA at varying addresses. Which hardware cause fits this pattern?
Sample question 3 of 3
A technician reads this event data after an unexpected restart and wants to look up the matching stop code reference.
EventData BugcheckCode 159 BugcheckParameter1 0x3 SleepInProgress false PowerButtonTimestamp 0Which code should be searched?
That’s 3 of the full A+ Core 1 bank.
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Continue practicingRead the sources
These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.