Monitors turn off while working

[Sketiku]

Hello,

last week I had a problem with my PC. While I'm doing something at my PC, my monitors just turn off and I have to restart my PC to have them working again. What I can tell, is that one of the monitors is saying "NO SIGNAL" on the black screen. Could you somehow help me? The last days have been frustrating, as I can't even play a single game properly, neither I can watch movies.

My PC:
Ryzen 7 2700x
Palit GTX 980ti

16GB Ballistix RAM 3000Mhz

[AndreiArgeanu]

You could try this.

[Sketiku]

Already tried that, it didn't work for me. 
I forgot to add something in my post. I can still hear everything that is happening on my PC. If I was speaking with someone on Discord, they could hear me, and I could hear them.

[Sketiku]

It sometimes happens after a couple of hours, and sometimes after a few minutes after my PC is on.

[Invisible tech Budjanovci]

Check your monitor power cable, i had similar problem awhile ago, and turned out that cable was broken.

[Sketiku]

But both monitors turn off tho

 

[Sketiku]

At the same time

 

[Sketiku]

I'm scared that it's a problem with the graphics card