Horizontal lines across screen. Computer is responsive, but is frozen/lagging below lines.

JoePlumber

Same issue as in this post: https://community.acer.com/en/discussion/660281/horizontal-lines-appear-on-the-middle-of-the-display-screen-nitro-5

Model AN515-55-53E5.

Intel(R) Core(TM) i5-10300H CPU @ 2.50GHz  2.50 GHz

Display is fine on other monitor when connected to it by HDMI. If I set the refresh rate to 60hz, the display on the laptop monitor functions as normal. If I unplug the HDMI, issue returns, even at 60hz. Attempted re-installing drivers and re-seating display cable. Problem didn't appear for one day, but is now worse than the first day. Please help!

StevenGen

https://community.acer.com/en/discussion/674281/horizontal-lines-across-screen-computer-is-responsive-but-is-frozen-lagging-below-lines

Check the eDP cable and plugs at the screen and the mobo and the condition of the cable if its not damaged and all plugs are connecting 100% as that is the main cause of these sorts of problems. As far as other ways to fix these lines problems is to do this:

1.   Turn your monitor off and on again. It seems like a basic fix, but it can often correct any screen glitches, such as horizontal lines.

2.   Restart your computer. A quick restart can fix a variety of tech issues and could get rid of any flickering lines on your screen.

3.   Close and reopen your laptop. Close your laptop’s screen, wait a few seconds, and reopen it again slowly. Look to see when the lines begin to appear on the screen as you open the laptop. If the lines only occur at a certain angle, the cause is likely damaged wiring.

4.   Use your laptop on a hard surface. Soft surfaces such as on a blanket or tablecloth can cause overheating, resulting in screen flickering and lines.

5.   Install the latest operating system updates. Old software conflicting with newer hardware could cause the lines on your computer screen.

6.   Check the monitor connection. Ensure all of the cables are securely connected, and watch for any improvements in screen image quality while you’re inspecting the cables. If you notice the image improves or worsens while touching the connecting cable, it may need replacement.

7.   Remove magnets and electronics. If you have other electronics or magnetic devices near your computer, screen, or the connecting cables, move them somewhere else as they may interfere with the connection and cause the lines.

8.   Clean your computer and monitor. Dust may be causing your computer and its monitor to overheat and create visual distortions.

9.   Change the screen resolution. Whether using a Windows or Mac computer, try changing its screen resolution.

10.Calibrate your monitor. This process should only take a few minutes and can help optimize your monitor for use with your computer and its environment.

11.Change your monitor’s refresh rate. Switching to another refresh rate setting can help with lines and screen flickering. 

12.Check for driver updates for profiles associated with your monitor and screen.

13.Run a troubleshooter. Open Settings and select System > Troubleshoot > Other trouble-shooters and run the Video Playback and Program Compatibility trouble-shooters. If you get presented with any recommendations for other trouble-shooters, run those too.

14.Last resort Change the screen. 

AN515-55 eDP Cables