I have a new Lenovo ThinkPad E15 laptop here and the sound will not work. It worked when I bought the laptop but after I changed the product key (to update it from Win10 Pro to Win 10 Enterprise) then ran all windows updates and let Lenovo Vantage System update install any critical and recommended updates, there is no sound. The error says Windows cannot verify digital signature for the drivers.
I went to Lenovo's site and installed the newest Synaptics audio drivers (which seemed to install fine but the new driver date is not reflected) I still have no sound... there is just a red X on the speaker icon.
See attached images for error messages, any ideas on what else I can try? This is happening on multiple E15's that we have here.