How To Check Power Supply Wattage Windows 10 New! May 2026

The short answer: You cannot check your exact power supply (PSU) wattage directly through Windows 10. Windows has no software mechanism to read the sticker on the physical hardware inside your computer case.

Turn off your PC and unplug the power cord from the wall. Press the power button on the case for 5 seconds to drain residual charge. how to check power supply wattage windows 10