Computer power supply units are designed to both power your computer's components and protect them from minor surges. But too large of a surge will blow a PSU's fuse and render a computer powerless, ...

How to test your PSU to see if it is dead or alive. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

1] Does the PSU fan spin on startup? Some users reported that their Power Supply Unit fan spins on startup but stops after some time. Others reported that the PSU fan does not spin even on startup.

An ATX power supply unit, or PSU, has a 24-pin connector for energy delivery. The symptoms of a dying or dead ATX PSU are identical to those of any PSU and involve operational problems in your PC -- ...