How to Recover a Lost Key Code on Microsoft Windows 7 Home Premium

1. Download ProduKey from Nirsoft.net/utils/product_cd_key_viewer.html by clicking 'Download ProduKey (In Zip file),' located near the bottom of the screen.
2. Open the downloaded ZIP file and then double-click 'ProduKey.exe' directly from within the ZIP file. No extraction or installation is necessary.
3. Locate 'Microsoft Windows 7 Home Premium' in the software list. The corresponding key code appears under the 'Product Key' column.