When i installed Fedoral in my Acer Windows 10 laptop, i enabled secure boot to have dual boot. Everything worked fine until i tried to install VirtualBox in Fedoral. It gave me an error:

WARNING: The vboxdrv kernel module is not loaded. Either there is no module
available for the current kernel (4.5.7-202.fc23.x86_64) or it failed to
load. Please recompile the kernel module and install it by

After about an hour of searching, i came cross this site: https://gorka.eguileor.com/vbox-vmware-in-secureboot-linux-2016-update/. The process looked too complicated for me. I followed the instructions without trying to understand a bit.

In the end, it worked. Save my day !!!!!!