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How to manually check your desktop computer’s Power Supply Unit (PSU) to know if it’s still working [Troubleshooting Guide]

The Power Supply Unit (PSU) is the main component that powers up your system unit. If electricity is the blood of your computer, then the PSU is the heart as it properly distributes electric current to the motherboard, hard disks, drives, ports, etc. In other words, it’s important that you have a PSU that functions