Hi pranavjoshi,

How many copies of Windows did you downloaded?
 
I would first want to inform you that only one copy of Windows can be installed and activated on only one computer.

 

First, make sure that the Time and Date are correct on your PC. If not, correct the Time and Date.

 

If this did not resolve the issue, follow the methods listed below to fix the issue:

Method 1: Verify that your Internet connection is working

This method is rated: Moderately easy.

To complete this method, follow these steps:

1) Click Start, and then click Help and Support.
2) In the Search Help box or in the Search online Help box, type Troubleshoot network and Internet connection problems, and then click Search Help.
3) In the list of topics, click Troubleshoot network and Internet connection problems.
4) Click the link that best describes the problem that you are experiencing.
5) Follow the suggestions to troubleshoot the problem that you are experiencing.
6) When you are finished, follow the steps in method B to reactivate Windows 7.

If this method did not work for you, go to method 2.

Method 2: Activate Windows 7 by using the automated telephone system

This method is rated: Easy.

To complete this method, follow these steps:

1) Click Start , and then click Computer.
2) Click System properties on the toolbar, and then click Click here to activate Windows now in the Windows activation section.
3) If you are prompted for an administrator password or for confirmation, type your password, or click Continue.

4) Click Show me other ways to Activate.
5) Click Use the automated phone system, and then follow the instructions that are provided.

Method 3:

Reset your TCP/IP Stack

1) Click Start

2) Type in Search box  Command

3) Right click Command and select Run as Administrator

Enter these one at a time (or copy and paste) and hit enter after each

ipconfig /flushdns

nbtstat -R

nbtstat -RR

netsh int reset all

netsh int ip reset

netsh winsock reset

Varun J: MICROSOFT SUPPORT
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