How to recover the license for my laptop to format?

I have a Lenovo g400s who has a genuine license of windows 8. Without my knowledge, my friend has downgraded the OS to Windows 7 without saving the data. How can I retrieve the key for windows 8 if I want to install windows 8 for my laptop? is it will automatically activate when I install the OS? Thanks for the help

If it is preinstalled, you have no business.

And Yes, there must be the same edition.

There is a choice of editions that Microsoft provides.

Make sure you download correct.

If necessary, contact Lenovo and command support of recovery at home, as they provide for a small fee.

This should help you.

'Create the installation media for Windows 8.1 '.

http://Windows.Microsoft.com/en-us/Windows-8/create-reset-refresh-media

_______________________________________

"How to create a Bootable USB or a DVD with an ISO of Windows 8 or 8.1"

http://www.eightforums.com/tutorials/2227-create-bootable-USB-DVD-Windows-8-ISO.html

Warning

It will not work to install Windows 8 or 8.1 for UEFI. To do this, see instead this tutorial below.

Create Bootable USB Flash Drive UEFI - in Windows

_____________________________________

Pre-installed with Windows 8/8.1 the product key on the operating systems (HP, Acer, etc.) is integrated in the motherboard BIOS, so that the problem of sticker joint record lost or worn out is no more.

When you reinstall it will go take the product key and activate the system automatically.

If it does not, follow these steps:

"How to activate Windows 8 and 8.1 telephone"

http://www.eightforums.com/tutorials/24636-activate-Windows-8-phone.html

«Get help with activation errors»

http://Windows.Microsoft.com/en-us/Windows-8/activation-errors

'How to activate a Microsoft product using Microsoft Product Activation Center'

http://support.Microsoft.com/kb/950929/en-us

See you soon.

Tags: Windows

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