Replacing the CD-Key Windows Vista / Seven

To change the cd-key Windows Vista / 7, just press Windows + R and type CMD window run. Then type slmgr followed by some of the options below:

slmgr-ipk
Install or replace the CD-Key.

slmgr-upk
Uninstall the product key (Product Key)

slmgr-ato
Windows Activation.

slgmr-xpr
Expiry date of current license status.

slgmr-rilc
Re-install system license files.