Do you know that it is possible to use Windows 7 and Vista for 120 days without activation. This is actually possible using the slmgr -rearm command which will extend the grace period from 30 days to 120 days. However in this post I will show you a small trick using which it is possible to use Windows 7 without activation for approximately 1 year! Here is the way to Use windows 7 without activation. 1. Go to “ Start Menu -> All Programs -> Accessories” . Right click on “Command Prompt” and select “Run as Administrator". If you are not the administrator then you are prompted to enter the password. 2. Now type the following command slmgr -rearm and hit enter 3. You will be prompted to restart the computer. Once restarted the trial period will be once again reset to 30 days. You can use the above command for up to 3 times by which you can extend the trial period to 120 days without activation. 4. Now comes the actual trick by which you can extend the trial per