Microsoft Office Error Activation

Got Samsung NC110 netbook for xmas with Microsoft Office 2010 starter already on it. Their is a program called "Microsoft Office 2010" which when you go on you have the option to activate by typing in a product key. I have just bought a product key tried it twice including restart and it still will not activate this is the error message I get near to the end of the process.

Getting this message when I try to ACTIVATE Microsoft Office 2010.

"Error 1935: An error occured during the installation of assembly component {E60D1DD4-B04F-4D3A-9E6D-63A0D4D8E4F1}. HRESULT: 0x80070005.
Setup failed. Rolling back changes."

I have let it roll back changes and the final message comes up ( some ppl say it works after the roll back) but it doesn't just wondering what I can do.

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