One user asked me to try advance method and I'm not able to boot into any OS now. I'm just getting
PXE-561: Media test failure, check cable
PXE-M0F: Exiting Intel Boot Agent
and it's restarting itself.
https://askubuntu.com/questions/575015/need-to-dualboot-ubuntu-and-windows-8-1
Here's the image of my hdd info: