Windows 8.1

Open windows command prompt and type "ver".  Then go to the following page and look up which version yours is to find out if it is R1 or R2. This applies to all operating systems from 2008 forward. It works for Server OS's and Desktop OS's....

The OEM product key (SLP key) is hidden within the UEFI BIOS. In order to determine your product key, the RWEverything utility is recommended as it looks at the systems hardware to determine the Windows product key and not at the registry, meaning it does not give...