Hello Ahmadcivil,
Your new laptop most likely came with a Trial of Office 2010 (or maybe 2007). These Trials are generally good for 60 days and then, unless you purchase a product key and activate the product, go into a reduced functionality mode where they can
dispay and print documents already on the computer, but they will not edit existing docs or create new ones.
The product key on the Certificate of Authenticity (CoA) on the computer is for
Windows, not Office.
If you want to continue to use the installed Office with full functionality, please purchase a product key for the edition of Office you want either directly from Microsoft or from a trusted local or online retailer.