When I put on dedicated GPU to my PC it displays black screen

I am posting this question and answer for future use of myself and people who face the same problem.

Problem: I need to install Nvidia Tesla K40 GPU on my PC ubuntu 14.04. However when I put GPU on PC then tu on, all I get is black screen. I figured it out the cause was my bios was loading the dedicated GPU(Tesla K40) as primary GPU instead of the onboard intel GPU. Since Tesla K40 is only for compute and not for display I was getting black screen.

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