Keep in mind that it's always best to use an official Windows product key for activation. Activation of Windows through Command Prompt and KMS servers is usually only intended for mass volume ...

Learn how to use SLMGR or Software Licensing Management Tool to Install, Uninstall, Activate, View, Extend Windows License.

How to Activate Windows 7 Through PowerShell. Windows PowerShell is a utility that lets you automate Windows features including activation of the operating system.

Like its predecessor, Windows 7 can be used for up to 120 days without providing a product activation key using a little-known reset command, Microsoft confirmed today.