Product key don't work

Well hello :)

After getting like 5 different product keys from Microsoft, It doesn't seem to want em :S

It goes then says

"The product key you have entered will not work with this edition of Windows 7.

You must either run Windows 7 Setup or enter a Windows 7 Home Premium product key."

Can anyone help? Thanks :)

I got Windows 7 Build 7068

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