BURG bootloader doesn't work

Hey!

Installed Ubuntu 14.04 along Windows 8.1 recently. With that, the GRUB bootloader was installed. Yesterday I decided I wanted a better looking bootloader so I installed BURG bootloader.

I followed this guide: https://www.youtube.com/watch?v=qu2e9LBBS6g

When I had followed the guide and then rebooted my computer GRUB bootloader still showed up instead of BURG. Does anyone know how to fix this?

Kind Regards

Hugo aka. Pierre-Gröt