You need to obtain, purchase, a valid retail copy of Windows 7 which will have the product key.

I have bought a brand new dell inspiron n4050 laptop with ubuntu operating system installed which i dont know how to operate with so i installed a win 7 on my laptop and after installation it says that the activation period is expired and on the bottom right corner of the screen it says Windows 7, Build 7127.winmain.090507-1820, This copy of Windows is not genuine. Now how to make this copy genuine, please help. I have tried all kinds of windows genuine remover tools but none works all of them makes the system crashed and nothing happen where to get the windows 7 product key as i have already spend enough money on the laptop and don't want to spend more.

You need to obtain, purchase, a valid retail copy of Windows 7 which will have the product key.

Hi, In order to activate Windows 7, you must have a valid Windows 7 product key for the correct edition. If you have, please refer to how to activate Windows 7. If you dont have, you can purchase it from Microsoft Online Store. Hope this helps. Jeremy Wu TechNet Community Support

Hi, In order to activate Windows 7, you must have a valid Windows 7 product key for the correct edition. If you have, please refer to how to activate Windows 7. If you dont have, you can purchase it from Microsoft Online Store. Hope this helps. Jeremy Wu TechNet Community Support