Upgrade from 14.04 to 16.04 results in kernel panic

I've been upgrading my ubuntu 14.04 to 16.04 through this guide.

This is what i did,

First, I did sudo apt-get update and it updated successfully.

Then, I did sudo apt-get upgrade and it downloaded packages around 300MB or something.

After than, I did sudo apt-get dist-upgrade which downloaded about 800MB of data.

Then the system restarted. Now it's not booting up. As of now, It just shows a blank screen and my CAPS-LOCK INDICATOR is blinking infinitely.

How can i solve this problem ? Please help. If you need more clarification, ask me in the comments.

Edit:

Now I've ENABLED Secure Boot from BIOS, and now am getting some errors on the screen.