This should help:
emotiva.com/resources/Emotiva_C-Media_Drivers_Win10_v101a.pdfDisabling Driver Signature Enforcement
IMPORTANT: There is a security feature called “driver signature enforcement” that is enabled
by default on many 64 bit versions of Windows 10 (but not usually on 32 bit versions); this
feature prevents drivers from being installed unless they contain a signature hash that is
recognized by Windows. If this feature is enabled on your computer, the drivers will not
install properly, and you will get an ambiguous error message. There is no simple way to
determine if DSE is enabled on your computer; you may either simply disable it (which will
cause no harm if it’s already disabled), or you may wait and see if you get an error message
after attempting the installation.
IF YOU RECEIVE AN ERROR MESSAGE AFTER INSTALLING THE DRIVERS STATING THAT
“WINDOWS WAS UNABLE TO INSTALL DRIVERS” AND THAT “NO CHANGES WERE MADE”,
THEN THE DRIVERS WERE PROBABLY NOT INSTALLED BECAUSE DRIVER SIGNATURE
ENFORCEMENT (DSE) IS ENABLED.
IF YOU RECEIVE THIS ERROR MESSAGE, THEN YOU MUST DISABLE DSE AND REINSTALL
THE DRIVERS FOR YOUR DEVICE TO WORK.
Emotiva C-Media USB Drivers Win10: v1.01a
PREFERRED METHOD OF DISABLING DRIVER SIGNATURE ENFORCEMENT
NOTE: One step in this procedure will require you to press a key on your keyboard. If you
have a laptop or netbook computer, simply use the attached keyboard and, if you have a
“convertible” computer, attach your keyboard before starting the procedure. If you have a
“pure tablet”, then you will be required to temporarily connect a USB keyboard.
(Most WiFi and Bluetooth keyboards won’t work for this.)
1. Click on the Windows “start button” icon (or press the Windows button).
2. Click on Settings.
3. Click on Update and Security.
4. Click on Recovery.
5. Under Advanced Startup, click on Restart Now.
6. Your computer will reboot, and return to a screen that says Choose an Option.
7. Under Choose an Option, click on Troubleshoot.
8. Under Troubleshoot, click on Advanced Options.
9. Under Advanced Options, click on Startup Settings.
10. Under Startup Settings, click Restart.
11. Your computer will reboot, and return to a screen that says Startup Settings.
12. Press the “7” or “F7” key to select Diable Driver Signature Enforcement.
13. Your computer will reboot again, and DSE will be disabled.
NOTE: Once your computer reboots you will be able to install the drivers with no problems,
and they will remain installed and continue to work after you reboot your computer.
(The current Windows literature disagrees on whether DSE will remain entirely disabled after
the next reboot, or whether it will be re-enabled, but will allow the unsigned drivers to remain
installed and in use. Therefore, if you have to reinstall the drivers, you might wish to repeat
the procedure before doing so.)