I try to install the Virtualbox software following the directions from the Oracle's website: https://www.virtualbox.org/wiki/Linux_Downloads
When I start Virtualbox is displayed to me the following message:
The vboxdrv kernel module is not loaded. Either there is no module available for the current kernel (4.4.0-22-generic) or it failed to load. Please recompile the kernel module and install it by: sudo /sbin/rcvboxdrv setup.
Additionally,I execute the directions from this answer: Can't install Virtualbox on 15.04
but my problem is not solved. Any ideas?