Lost activation key Office 2010

I have lost the card with the activation key that came with my system (office was preloaded). I want to update to Windows 10 and will need the key. Is there any way I can find the key on my computer?

Hi see if this will help you. but if your just upgrading through windows update it should not need to be reinstalled everything should sill be their. How to Find Your Windows or Office Product Key | PCWorld

I also like Belarc:

Belarc Advisor - Free Personal PC Audit, for software, hardware and security configuration information on your computer. Software license management, IT asset management, cyber security audits, and more.

Regards,
GEWB

Many thanks Magicaljellybean worked the miracle, may thanx:):):):):):):)

Also thanx for the other suggestion Belarc, will bear it in mind:):):):):):):)

Glad we could help