220-1201 · Question #344
220-1201 Question #344: Real Exam Question with Answer & Explanation
The correct answer is C: The 4-pin CPU power connector is not connected. Modern motherboards require both the 24-pin ATX connector and a 4-pin or 8-pin CPU power connector. If the CPU power connector is not attached, the motherboard will receive power but the system will not boot. CompTIA A+ specifically lists this as a common mistake after replacing
Question
A user replaces their PC power supply and connects it to the components, but the PC fails to start. What is the most likely cause?
Options
- AThe computer requires additional RAM
- BThe wattage is insufficient
- CThe 4-pin CPU power connector is not connected
- DThe PSU only works in redundant setups
Explanation
Modern motherboards require both the 24-pin ATX connector and a 4-pin or 8-pin CPU power connector. If the CPU power connector is not attached, the motherboard will receive power but the system will not boot. CompTIA A+ specifically lists this as a common mistake after replacing a Insufficient wattage may cause instability, but usually the system still attempts to start. RAM does not prevent power-on if missing; instead, the system produces beep codes. Redundant PSUs are used in servers, not standard desktops.
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