Whole pc shuts down when I slightly move computer cable in my monitor

[karl.mari]

Hello
Can anyone help me??
If ever I touch or even slightly move the cable of my monitor (the black one), the pc will shut down. Can anyone explain what is happening. I've been getting improper shutdowns and it's really killing my pc.

 

[Aeacus]

I take that the black cable you try to move is monitor's power cable? Since both cables on my 2 monitors which i have are black (power and signal).

If it is power cable then is your monitor power cable plugged into the same power strip as your PC is?
Because when it is, it would make sense that your power strip looses power once you move it. Here, i suggest that you either replace your power strip or plug your PC to a different power outlet in your home. And not in the different socket in the power strip.