Hi. I bought a Dell laptop a couple months ago and it was preinstalled with Windows 8 (non-Pro). It always shows the same product key even when I used a different disc for installation (not asked for a key during installation!). It looks like the key is built in hardwarewise say in the bios or somewhere. I bought a Pro ver more recently. It came with a Pro key. Is it possible to replace the embedded key with this? and how? Would that work for activation? Thank you.