How to Activate Windows 7?

To activate your Windows 7 copy, use the following steps:

1. In Windows 7 Product Activation, choose the ‘Activate Now’ link and you’ll be offered two options – namely, activating over the phone or online. The simplest way is by activating online. (It’s also preferred by Microsoft.)

2. When asked, type in the unique 25-character key that’s shown on the Windows 7 CD case. If you choose to activate by phone (if your unique situation requires some jawboning or you don’t have Internet connection), you should punch the installation ID by phone. During online activation, after you type the activation key, Windows 7 will do the following:

a. Windows 7 scans all serial numbers inside the computer – the processor, disk drives, and network card, among others. Using a secret algorithm the numbers are mixed, producing another unique 25-character key that identifies your computer. Both keys (50 characters, in all) are taken together to form an installation ID.

b. Your machine sends Microsoft its 50-character installation ID.

c. Microsoft verifies if the installation ID is valid.

If the first 25-character code (activation key) has never been used before or if similar installation ID is received by Microsoft (which means that you have activated this Windows 7 copy in the same computer twice), Microsoft gives a confirmation ID (42 characters). Both the confirmation ID and the installation ID are stored on your machine.

However, if the 25-character code has been used in other PC, though, a polite notification informs you that your Windows 7 copy cannot be activated. You are asked to enter another valid key. You are given further information for contacting Microsoft, in case you need it. Microsoft reps are often understanding, fair, and courteous. If you have a valid reason for reactivating your Windows 7 – for example, after your hard drive or motherboard died – don’t hesitate to contact a Microsoft rep by phone.