E545 and Function key not working

Any help here is apprecited. My function (Fn) key is refusing to work at all. None of the special features are able to be used. I've checked all my drivers, and followed the instructions in the User Guide, but some of the options described in the guide are even showing on my computer.
I'd love for some help on this issue, as the computer is pretty worthless right now.

Hi Jamesbjenkins,
Welcome to Lenovo Community!
As per the query we understood that you are facing issue with keyboard function keys not working on your ThinkPad E545.
Is the system updated with all the latest drivers and application? To confirm with I request you to run ThinkVantage system update tool. This will search for all the required drivers and application for your system and will update.
Hope this helps.
Best regards,
Hemanth Kumar
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