How to fix horizontal or vertical lines on iMac screen?

If you’re noticing horizontal or vertical lines on your iMac screen, appearing in various colors and patterns. You have tried to fix the issue (by turning off your iMac) and turn off and on your iMac, but the problem is still there! If these aberrant lines make your display annoying and disrupt your view, then it’s important to take action. Luckily! In this guide, we have shared different ways to tackle the horizontal or vertical lines on iMac screens. Furthermore! We brief the reasons for the lines appearing on the screen and step-by-step practical solutions to fix the problem. We have up to 17 years of experienced staff to deal with iMac screen repair. If you have tried different ways and have not reached your final solution, then consider “iMac Repair Dubai” and get your iMac to its pristine visual state.

Why are there lines on the iMac's screen?

If you have a query, Why does my iMac have horizontal lines on the screen? Keep reading! We have shared multiple factors that cause the lines-related issues. Some most common factors are given below:

A Loose Connection:

A defective or unreliable cable that connects the display panel to the logic board and a loose connection between the two may cause the iMac horizontal lines on screen. Check the connection and replace it as defective to avoid the display woes.

Impaired graphic cards:

In some cases, malfunctioning graphic cards and running resource-intensive applications may overload the GPU (Graphic Processing Unit). It may lead to anomalies of display like screen flickering or lines on the screen.

Software dysfunctioning:

Some software-related issues like corrupted or outdated drivers and firmware issues may cause screen-related issues.

Hardware issues:

Other common reasons that may lead to iMac screen issues such as faulty graphics, power-supply matters, and physical damage to internal components like logic board, cable, GPU, and display controller.

Overheating:

A few environmental factors, like too hot your iMac, may cause thermal expansion as well, and too cold may lead to condensation, which can affect the display performance. To fix this issue, you have to manage external temperature.

Physical damage:

Forceful pressure or liquid spillage can destroy the LCD (Liquid Crystal Display) and damage the display graphics, which leads to line formation on the iMac screen.Electromagnetic Interference.

Nearby electronic devices or magnetic fields distort the display signals.

Clear the Lines, Restore Your Screen – Expert iMac Display Fixes!

Ways to fix lines on iMac screen

Here are some effective troubleshooting methods for iMac horizontal lines on screen fixes. Try these ways and fix your glitches.

Restart the iMac:

If there are minor display issues, this can be resolved by booting your iMac. Restart your iMac and see if the problem is fixed or not. To restart, follow the steps:

Go to the iMac “Menu.”
Click on the “Restart” option

Wait, and see if the display lines still appear then go for the next step to resolve your issue.

Try a different display:

Try an external monitor to rule out the problem, connect the external display, and check if the lines still appear. Then, you need to check the cable or port connections.

Check the cable connection:

First, double-check the connections of your current ports and cables. If there’s any looseness, reconnect them securely or replace any defective wires. If the issue persists despite a secure connection, it suggests the problem might lie beyond the physical connections. In such cases, it’s advisable to seek assistance from iMac screen repair professionals who can assess the internal software and drivers for any issues.

Update the MacOS:

If you experience horizontal or vertical lines on the iMac screen and rule out that there is no external damage, then follow the step-by-step method and reinstall the operating system to fix your issue.

First of all, you need to open the “Apple Menu.”
Then select the “system preferences” option.
Now you can see the “Software Update” option, click on it.
To start the process click on “Update Now.”
Follow the on-screen instructions to complete the process.
After this, your problem has been fixed, if not try another way or consult iMac screen experts.

Reset the PRAM/NVRAM:

iMac screen flickering horizontal lines issues can be fixed by resetting the PRAM/NVRAM.

Turn off your iMac
Now again turn it on and immediately press and hold Option + Command + P + R keys simultaneously until the startup sound has been heard.
After turning on you can see that your problem has been resolved and the iMac’s screen lines have disappeared. If not! Then, you have to consult with our experts. We’re confident that we can optimize the smoothness of your iMac’s display.

Reset the SMC:

By resetting the SMC (system management controller), you can control various hardware-related issues such as thermal management, power management, and battery charging that cause lines on the iMac’s screen.

First of all, shut down the iMac
Unplug the external devices like the power cord
Wait for a few seconds
Plug it again
Now turn on your iMac

Run Apple Diagnostics:

Apple provides a built-in diagnostic tool to identify hardware-related issues.

Restart your iMac
Press and Hold the D key
It boots up to and runs the diagnostic

Your issue will be fixed after using the methods mentioned above, if you see that the problem is not resolved, then contact us or visit “iMac Repair Dubai”. We have certified and well-experienced experts. We repair and replace original components at reasonable prices with free diagnostic services as well as we offer free pickup and delivery all over Dubai. Don’t be worried! Come and avail our top-notch services to optimize your productivity.

Professional iMac Logic Board Replacement Dubai

To protect your iMac from physical damage or malfunctioning of the operating system, you must apply preventive techniques.

Follow the tips and save your iMac screen.

Handle your iMac with care.
Avoid extreme thermal pressure and manage temperature.
Keep the environment clean.
Keep the screen safe from scratches and physical damage like forceful pressure on the screen or water spills.
Use a proper power supply.
Update software regularly.
Monitor the cable connection.
Backup important files and folders.

How to fix horizontal or vertical lines on iMac screen?