Stripes on your screen? This is probably the solution
Step 1: turn the monitor off and on
It may sound strange, but sometimes a problem can be solved by simply restarting the screen. Turn off your screen, leave it off for about 2 minutes, then turn it back on.
Step 2: check the cables
Check whether you're using the right cables for your monitor's connectors, and whether you're not transmitting digital images with an analog cable. You can read everything on cables in the article below. Check whether you've properly connected them to the ports. Also check whether the cables are intact and don't have any bent pins. Replace outdated cables. A kink in the cable or any bent contact may cause lines to appear.
Step 3: adjust the resolution and try a different source
If your screen's resolution is set too high or much too low, it's possible that the image isn't displayed properly. Adjust the resolution to your screen's maximum resolution. By connecting a different source, like a laptop or game console, you can check whether the problem lies with your primary laptop or desktop.
Step 4: calibrate your screen
Calibration is properly setting your screen for your use. Windows has an automatic calibration function. You can read how to use this program in the article below.
Step 5: adjust the refresh rate
The refresh rate indicates how often the image display is refreshed per second. The higher the refresh rate, the more smoothly the image is displayed. It's important that your monitor and your laptop or PC use the same refresh rate, or the screen might start flickering. Read the following advice article on how to adjust the refresh rate.
Step 6: update the video card driver
Outdated software is a possible cause of image flickering or lines on your screen. That's why you should update the video card's driver. Read the following advice page to learn how to do that.