Please be aware that, Office Starter 2010 is reduced- functionality versions of Microsoft Office 2010. So, if you installed the other version of Office, for example, download from office.microsoft.com, then the product key will not work.
Please check the package delivered with your computer, see if you can find a recover disc, which should contain the correct version of Office Starter.
If you have problem find the recover disc, or still have problem to activate Office with the "PIN" you got, please get contact with the computer manufactory for help.
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