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If you cannot or do not want to open your PC, you can estimate the minimum wattage you need. This tells you what PSU wattage you should have , but not the exact model.
Press your PC's power button once to fully discharge any remaining electricity in the components. how to check power supply wattage windows 10
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. If you cannot or do not want to
Since Windows cannot read hardware wattage, opening your computer case is the only way to get 100% accurate information. how to check power supply wattage windows 10
, typically at the top or bottom rear of the case.