How to Change windows 7 Product key

Windows 7 Licensing Manager – slmgr.vbs

1. Click on start and type command (cmd) with run as administrator option.
2. Now type following command
   
   “slmgr.vbs -ipk <insert your new product key here>”
   
   
3. To activate windows after changing the key, run “slmgr.vbs -ato”

You should be familiar with the Windows Licensing Manager if you have problems activating Windows 7. Here are the runtime options for “slmgr.vbs”:

• -ipk [KEY] installs product key (enterprise too) or swaps current key
• -upk – uninstalls product key
• -ato – activate Windows
• -dli [Activation ID | All] – license information
• -dlv [Activation ID | All] – display license information in detail
• -xpr – displays the expiration date for current license state
• -dti – display installation ID necessary to activate online
• -atp – activates Vista with the provided Confirmation ID – (without inverted commas)
• -cpky – will enable you to remove information related to product key from the registry
• -ilc – installs a license – (without inverted commas)
• -rilc – re-install system license files
• -rearm – reset the licensing status of your Windows Vista
• -sprt port Set KMS host listening port (where port is the port ID).
• -sdns Enable dynamic DNS publishing (default).
• -cdns Disable dynamic DNS publishing.
• -cpri Set KMS processor priority to low.
• -spri Set KMS processor priority to normal (default).
• -xpr Display the date when the activation will expire.