I tried to install Kali Linux, it worked perfect. After a short period of time, I wanted to install NVIDIA display drivers to use my dedicated GPU. Following the official guide on the Kali Docs, I found myself stuck. When I am booting my BIOS says that there is no bootable device. After that I tried to run a live Ubuntu ISO, which suceeded. I ran boot-repair, but it failed. It brought that error message back: http://paste2.org/hA4ALJc4

Please help me, I do not know what to do.

Thanks