Use Windows 7 without Activation

Saturday

There is method to use Windows 7 for 360 days without Activation.
to achieve this follow the steps:

1.Start->All Programs->Accessories->Command Prompt and select Run As Administrator.
2.Now type slmgr -rearm
Note: slmgr-rearm
3.Restart the Computer.

Now you will be able to use Windows 7 for 30 days!
You can use same method for 3 times by default.so you can use for 120 days!!
After the 3times follow the below tweak

There is a tweak to extend this for 240 days! follow the following:
1.Press Window key+R and type regedit press enter.
2.Now navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\SoftwareProtectionPlatform
3.In right side you can see SkipRearm and open it.
4.In that change the value to 1
Now you can use the slmgr -rearm method for 8 times so you will get 120+240=360 days!!!


Note:
Software Licensing Management Tool. Windows Activation and Key Management Service (KMS)

Syntax:
      slmgr [MachineName [Username Password]] [Option]

Key:
  machinename   The machine to administer, by default the current local machine.

  username      An administrator equivalent user account for the remote computer.

  password      The password for the user account on the remote computer.

   /ato   Activate Windows license and product key against Microsoft's server.

   /atp Confirmation_ID   Activate Windows with user-provided Confirmation ID 

   /ckms  Clear the name of KMS server used to default and port to default.

   /cpky  Clear product key from the registry (prevents disclosure attacks)

   /dli   Display the current license information with activation
            status and partial product key.

   /dlv   Verbose, similar to -dli but with more information.

   /dti   Display Installation ID for offline activation

   /ipk    Key  Enter a new product key supplied as xxxxx-xxxxx-xxxxx-xxxxx-xxxxx 

   /ilc     License_file   Install license

   /rilc    Re-install system license files

  /rearm Reset the evaluation period/licensing status and activation state of the    machine

   /skms activationservername:port 
          Set the Volume Licensing KMS server and/or the port used for KMS activation
          (where supported by your Windows edition)

   /skhc  Enable KMS host caching (default), this blocks the use of DNS priority and
                weight after the initial discovery of a working KMS host.
                If the system can no longer contact the working KMS host, discovery will be   attempted again.

   /ckhc  Disable KMS host caching. This setting instructs the client to use DNS auto-        discovery
          each time it attempts KMS activation (recommended when using priority and    weight)

   /sai interval 
          Sets the interval in minutes for unactivated clients to attempt KMS connection.
          The activation interval must be between 15 minutes and 30 days, although the  default (2 hours) is recommended.
          The KMS client initially picks up this interval from the registry but switches to the KMS setting after the first KMS response has been received.

   /sri interval
          Sets the renewal interval in minutes for activated clients to attempt KMS connection.
          The renewal interval must be between 15 minutes and 30 days.
          This option is set initially on both the KMS server and client sides.
          The default is 10080 minutes (7 days).

   /spri  Set the KMS priority to normal (default).
   /cpri  Set the KMS priority to low.
          Use this option to minimize contention from KMS in a co-hosted environment.
          Note that this could lead to KMS starvation, depending on what other applications or server roles are active. Use with care.

   /sprt port
          Sets the port on which the KMS host listens for client activation requests. The default TCP port is 1688.

   /sdns  Enable DNS publishing by the KMS host (default).
   /cdns  Disable DNS publishing by the KMS host.

   /upk   Uninstall current installed product key and return license status back to trial state.

   /xpr   Show the expiry date of current license (if not permanently activated)

Token-based activation:
   /lil   List the installed token-based activation issuance licenses.

   /ril ILID ILvID
      Remove an installed token-based activation issuance license.

   /stao  Set the Token-based Activation Only flag, disabling automatic KMS activation.
   /ctao  Clear the Token-based Activation Only flag (default), enabling automatic KMS activation.
   /ltc   List valid token-based activation certificates that can activate installed software.
   /fta Certificate Thumbprint [PIN]
          Force token-based activation using the identified certificate.
          The optional personal identification number (PIN) is provided to unlock the private
          key without a PIN prompt when using certificates that are protected by hardware
          (for example, smart cards).