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When I purchased my laptop it cameu with office home and student 2016 recently after formatting I lost my product key either u will tell me how to find that old product key or issue a new one.
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Did you have the Full Version MS Office or did the Notebook come with the MS Office Trial?
If you have the full Version, please refer to this Link: https://support.hp.com/in-en/document/c04867233 for help Activating MS Office
If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.
KrazyToadI Am An HP Employee
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