Hello, Few years ago I purchased the Windows 8 OS on DVD that came with the original license key. When the Windows 8.1 came out, Windows 8 has been upgraded via App Store. At that time a new license key was issued. Currently, I am in a need to reinstall windows 8.1, but I don't have the original Windows 8 DVD anymore, thus I don't have the original license key. Unfortunately, the new 8.1 license cannot be used for a fresh install of Windows 8.1. Is there a way to retrieve the Windows 8 key from current version 8.1?