To activate Windows Vista by phone, you have to make use of an automatic telephone system. To start Windows Vista by using the automatic telephone system, follow these steps:

1. You have to first click on the Start button which is situated on the left side of the Taskbar and after that click on the Computer.

2. And on the toolbar, click on the System properties, and after that again click on the Click here to activate Windows now in the Windows activation segment.

By chance if you are asked for an administrator password or for verification, type the password, and click on the Continue.

3. And click on Show me other ways to Activate.

4. And finally click on the Use the automated phone system, and then pursue the instruction.