Q: I used Jelly Bean Keyfinder to display my product key. But it actually shows me a different key than the one shown on the sticker of my PC or laptop.

A: This is normal for basically all OEM machines. What is shown here is the universal OEM that was used to preactivate your machine in order to spare you the trouble of activating windows. Don't worry, the key on your sticker will work fine just in case you decide to reinstall Windows.

The pre-activation key comes with a Microsoft certificate and is bound to specific BIOS checksums and properties.

It can only be used once.

Q: I actually never got a DVD with my PC. Isn't that a requirement for all OEMs?