Hi, I have a genuine Windows 8.1, that came with my new pc, ie, it is the Core edition. I need to use Hyper-V, which can only be enabled in the Windows 8.1 Pro. So, I tried upgrading it to Windows 8.1 Pro using the "Add features to Windows 8.1" option in Control Panel. In that, on adding the general 8.1 Pro key, it says "Your key works." What I wanted to know is that once I carry on with this installation, will Windows ask for activation after completion/reboot? Or Windows will remain activated, as it is now? Also, in case Windows is not activated, can I use the KMSpico on the upgraded Windows 8.1 Pro? Please help.