Check if Specific Kernel is present on the following path or not.

ls -l /opt/versa/modules/x86_64/

If not present then you can download the desired Kernel using the following command.

sudo apt-get install -y linux-image-3.16.0-77-generic linux-headers-3.16.0-77-generic linux-image-extra-3.16.0-77-generic

After downloading  Remove Predent Kernal 

EX: 

cd /boot

rm *4.4.0*

ls

update-grub2

reboot

Note: Highlighted Command will change according to Kernal Version rest all will be same.