Windows 7 Home basic product key lost

I had Windows 7 Home basic I formatted my PC... during reinstallaton... I know I lost the product key...
I have CD of Home base... that have the number of COA barcode... I did this CD in my local retail IT store...

Please tell me how I can retrieve product key...?

If Windows 7 Home Basic Edition is preinstalled on your computer, look for the COA sticker, either in the compartment below or the battery if it is a laptop or a Top/side if it's a desktop computer.

or

Lost or misplaced product key (certificate of authenticity)

http://support.Microsoft.com/kb/824433

How to get a replacement product key?

To replace a Microsoft product key, you must contact Customer Support and Microsoft. To locate the phone number, visit the following Microsoft Web site:

http://support.Microsoft.com/default.aspx?scid=fh; EN-US; CNTACTMS

For more information on this subject, visit

http://support.Microsoft.com/kb/811224

Tags: Windows

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