Computer screen acting weird

Hello,

I didn't know where to post this, but I think here is most appropriate.

Since today, after rebooting, my screen is acting weird. (See photo: screen.png is a printscreen, screenv2.jpg i took with my smartphone)

I've already done everything I know that has to do with gpu, so I narrowed it down (90% sure) that it is not caused by the gpu. Anyone has an idea?

Thanks!

Rick

Edited by rickvleugels, 05 March 2018 - 12:13 PM.

The interference pattern looks like and induced signal unto the video.  Checking display cables and their proximity to power cords and other device cables may solve the fault.

Thank you for the response.

I've tried other display cables, but the problem persists. Also tried rearranging them.

I'm thinking it is probably the motherboard, but not sure...

Furthermore, every 1-2 minutes, the screen goes black for half a second.

Edited by rickvleugels, 05 March 2018 - 12:33 PM.

Problem is solved. Disconnected, cleaned the contacts and reconnected the power cable of the monitor itself, and the screen is normal again.