Enter new Product key & click next . Do not try to activate. First need to get Installation ID
2.To get Installation ID for windows Press the Win+R keys to open Run, then type: SLUI 4, then click on OK. (Note that there is a space between SLUI and 4.)
3. Select your country or region, then click Next.
4. pls. send us your installation ID shown below picture & wait for our confirmation
5. Once you get our confirmation activate windows online by entering product key