reinstall and reactivate the upgrade of windows 8

Hello

Some time ago (about 6 months), I bought an upgrade to windows 8 to upgrade my laptop from its current version of windows 7.
I bought the upgrade directly from the MS site and paid by credit card.
I need to reinstall my laptop to clean a virus, which allows to restore factory settings and back to windows 7.
How can I reactivate my license windows 8 given I can't find my receipt for the purchase, but currently the credit card and the permit already installed for verification?
THX

Here's how you do a clean install of Windows 8:

If you want to reinstall Windows 8, which means remove applications and personal files and settings, you can use the reset and refresh. This is equivalent to a clean install.

To do this, follow these steps:

· Press the Windows key + i on your keyboard to show the charms (if you use a touch screen: touch the right edge of your screen and drag your finger to the left)

· Click settings

· Click change PC settings

· Click general in the left column

· In virtue remove all and reinstall Windows, click Start

Then follow instructions that will be provided on the screen to reinstall Windows on your PC.

also:

Recommendations for the protection of your system:

There are some that will hide your files/folders so that you don't normally see them. I strongly suggest to run a scan on your computer with your antivirus/antimalware software. If you need to, you can also use the Microsoft Safety Scanner, it's free:

http://www.Microsoft.com/security/scanner/en-us/default.aspx

Also, if your files are hidden, check out the following article on how to display the:

http://Windows.Microsoft.com/en-us/Windows7/show-hidden-files

Tags: Windows

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