Intermittent lines showing up on monitor

Wyndsan

Prominent
Jul 26, 2017
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I have started having intermittent black lines show up on the background screen of my main monitor. I have two monitors in extended mode, and it only shows up on the main monitor which is a Sceptre C325W-1920R. They are single lines that form 3 sides of a rectangle.

4Z47T


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I have tried multiple times to post either an imagine or a link to an imagine with absolutely no success. I went to the "How to post images in Tom's Hardware Guide" and followed the instructions there using a link from both imgur and Google "My Drive". I tried entering both url's as links, and as images. Neither show up. So you all may comment on either the question of my post, difficult without being able to illustrate what I'm talking about, or how to show you my screenshot since there is apparently no ability on this site to simply upload a picture.

Comments?

Many thanks!