Cant boot to Kali linux

have installed the operating system successfully on my laptop that has Win 8.1 pre-installed. (With this guide)

After restarting the computer, windows 8.1 loaded instead of grub bootloader, so I have searched in Google and found a program called easyBCD. I followed this simple guide, but when i get to the screen where to choose between Windows and Kali Linux there is a problem:

I choose Kali Linux and then I get an error that "Windows failed to start. A recent hardware or software..." message...

I wanted to load grub bootloader but I cant seem to make it work.

How can I load grub bootloader? And if I cant, how can I make my machine to load Kali Linux at all?