ZZ from: http://acer.custhelp.com/app/answers/detail/a_id/38289/~/windows-10%3A-disable-signed-driver-enforcement
Windows 10: Disable Signed Driver Enforcement
How can I install drivers that are not digitally signed?
Windows 10 enforces driver signatures by default. This can be disabled to install drivers that are not digitally signed. Use the following steps to disable driver signature enforcement.
1,Click the
Start menu
and select
Settings
.
2,Click
Update and Security
.
3,Click on
Recovery
.
4,Click
Restart now
under
Advanced Startup
.
5,Click
Troubleshoot
.
6,Click
Advanced options
.
7,Click
Startup Settings
.
8,Click on
Restart
.
9,On the Startup Settings screen press
7
or
F7
to disable driver signature enforcement.
Your computer will restart and you will be able to install non-digitally signed drivers. If you restart your computer again the driver signature enforcement will be re-enabled.