Windows 10: Why won't my old product key work?

My windows 10 pro machine got corrupted, so I reinstalled windows 10 pro and I saw a pop up saying activate windows even though already activated. Even in settings it recognized the product key but wouldn't work it popped up with an error saying "can't connect to your organizers network" everytime I try to put the product key

:)

 

Skype won´t wok in 17063

Skype Won´t work... games won´t work...

Making backup and re-format...

Maybe I Install a Windows 7 again, At least, all of my games run smoothly ...Sadness!!

*Banghead

 

google and you tube stiil won t work

google and you tube stiil won t work

 

Old Windows 7 Pro product key not working

You are not following what I advised you to do:

If you received one of the error codes in this list, go to method C.

Follow the prompts to go to the different methods.

What does it say at the end of C if that does not work???

If this method worked, you are finished.

If this method did not work for you, go to method G.


Method C: Use the "Change product key" feature to enter your product key again

This method is rated: Easy.

If you were directed to this method, you have the correct product key, but you have to try entering it again to reactivate Windows. To do this, follow these steps:

1. Click Start
   
   
   
   , click Computer, and then click System properties on the toolbar.
2. In the Windows activation section, click the Change product key. If you are prompted for an administrator password or for confirmation, type your password, or click
   Continue.
3. In the Product key box, type the product key, and then click
   Next.
   
   Note Use your original product key.
4. Follow the steps in the Windows Activation Wizard to complete the activation process.

If this method worked, you are finished.

If this method did not work for you, go to method G.