Before touching any hardware, turn off the computer and unplug it from the wall outlet. Method 1: The Paperclip Test (Basic Power-On Test) The paperclip test is a standard method to check if the PSU turns on and outputs power to the rails.
Proper Function Check and Testing Steps
3V 2 Black 5V 3 Orange 3. Unplug the PSU from the computer and locate the 24-pin main connector.
Check the cables for fraying or bent pins, particularly the 24-pin ATX and CPU connectors. Testing the power supply unit (PSU) is one of the most critical troubleshooting steps for any unstable or non-starting computer.
How to Check If Your Power Supply Is Working Correctly
Ground yourself by touching a metal part of the case or wear an ESD wrist strap. Start by examining the PSU casing for any physical damage, such as dents or cracks.
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