Extend Windows 7 Activation Trial Period
This will show you how to extend the Windows 7 activation trial 30 days at a time for a total of up to 120 days before you must activate or reinstall Windows 7. When you install Windows 7, you will have 30 days to activate by default. Microsoft has allowed this rearm option to extend the period for another 30 days for up to 3 times.
To See How Many To check how many Rearms You Have Left:
Open the Start Menu.
In the search line, type slmgr.vbs -dlv and press enter
After a few seconds, you will see how many remaining rearms you have left.
Let us get Started by Opening the Start Menu.
In the Start Menu search box, type regedit, and press Enter
In the registry, go to:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform
In the right pane, If it is not set to 0 - Right click on SkipRearm and click on Modify.
Type 0 and click on OK.
Close regedit.
Open a command prompt.
In the command prompt, type slmgr -rearm and press Enter.
Click on OK.
Close the command prompt.
Restart the computer to apply the changes and reset your trial period back to 30 days to activate.