Help with moving lines on monitor

[Yana]

Hello, I have recently bought  a second monitor, a Dell 24' Monitor - S2718NX   a week ago. For the past few days it has been working exactly as I would have liked it to work. But now, at 2:33am  there has been some moving lines going up. At first they would go up to the top, but now it goes to the middle of the screen and starts jittering. I looked up online that dust can create this, so I cleaned my computer from all the dust. After cleaning it is still doing this. When I shut my computer down to clean the computer, it said "no HDMI signal from your device." When it said that I also checked the HDMI cable and it was secured tightly into the monitor and the back of the computer. Do you guys know anything that causes and would fix this?

Ty. I have provided a picture on what it looks like. (sorry if it doesn't help or isn't that great.

[wONKEyeYEs]

Might be a bad HDMI cable.

Would be first thing to check.

[Yana]

1 minute ago, wONKEyeYEs said:

Might be a bad HDMI cable.

Would be first thing to check.

Even if the monitor was fine and everything was working in the first place? And how would I check if the hdmi cable is bad? 

[wONKEyeYEs]

2 minutes ago, Yana said:

And how would I check if the hdmi cable is bad?

Use another one or use your cable on another system.

[Yana]

3 minutes ago, wONKEyeYEs said:

Use another one or use your cable on another system.

Just switched the 2 cables, still the same problem.

Even when i unplugged the hdmi cable, the lining from the computer screen(same image from above) was still going on without the cable.

 

[wONKEyeYEs]

10 hours ago, Yana said:

Even when i unplugged the hdmi cable, the lining from the computer screen(same image from above) was still going on without the cable.

So if the monitor displayed the prob when not connected then it's the monitor where the problem lies?

Try your monitor on another system or another monitor on your's.

[Yana]

On 12/10/2017 at 1:59 PM, wONKEyeYEs said:

So if the monitor displayed the prob when not connected then it's the monitor where the problem lies?

Try your monitor on another system or another monitor on your's.

yea i just contacted dell, they are sending a replacement. TY!

Edit:

Could you help me with choosing a GPU/CPU? I want a gtx 1060 6gb but idk if it compatible with my mother board.. and with a CPU what should I look for? I only have a core i5-6400 with 2.70GHz. I'm planning on playing Monster Hunter World if that makes any difference.

[wONKEyeYEs]

4 hours ago, Yana said:

I want a gtx 1060 6gb but idk if it compatible with my mother board

What is your MB?

[Yana]

Just now, wONKEyeYEs said:

What is your MB?

B150M PRO-D

[wONKEyeYEs]

You should have no problems with the  gtx 1060 6gb.

Should try it with the new gpu before upgrading your cpu.

The  i5-6400 should work fine.

[Yana]

Just now, wONKEyeYEs said:

You should have no problems with the  gtx 1060 6gb.

Should try it with the new gpu before upgrading your cpu.

The  i5-6400 should work fine.

Nice! TY!