Checking your Power Supply Unit (PSU) wattage in Windows is tricky because most standard power supplies do not have a data connection to the motherboard. This means Windows has no way to "talk" to the PSU to ask for its capacity.
Unlike your CPU or RAM, the power supply does not communicate its specifications to the operating system. Windows has no way of "scanning" the power supply to see its model number or total wattage. how to see psu wattage in windows
If you bought your PC or PSU online, check your order history on sites like Amazon or Newegg. Checking your Power Supply Unit (PSU) wattage in
The only guaranteed way to find the exact wattage is to open your PC case and look at the sticker on the side of the PSU. It will list the brand, model, and total wattage. Windows has no way of "scanning" the power
If you need to know the maximum wattage your PSU can handle (e.g., 500W, 750W), software usually cannot provide this directly.