Horizontal lines at the bottom of iMac(M1,2021) screen

Same solution:

Have it fixed, and send feedback.

Product Feedback - Apple

FWIW, it's a hardware problem and needs looked at by Apple.

There is no software solution, you will have to contact Apple to get it fixed.

My iMac has the same problem. Could you tell me how much it takes to repair?

Exactly the same issue with 24" iMac M1 after 2 years 11 months - only option was replacement of screen at my expense - over £630 - not happy!

If the repair is out of your budget ranger an less costly workaround is to get a 3rd party monitor, put it infant of the iMac and set the iMac's monitor brightness to off and use the 3rd party monitor. 4K monitors can be had for $200 and up for 27" and $300 and for 32": brand LG.

I have one, too, and never had an issue.

Assuming your purchased AppleCare (always a wise move) then it will be covered. I have been a long time Mac owner and have owned many of them, when I invest that much money in a computer I want the peace of mind that AppleCare offers. If you passed that up and it is a hardware issue then please consider this instance a lesson learned about self insuring. Most of the time it doesn't pay off, until that time you need it.

Even I too have same issue I bought iMac 24 inch M1 in 2021, I normally use 2 to 3 days in a week, all of sudden screen started flicking. Apple service Center suggested for screen replacement which cost approximately $900 SGD. I am not sure how apply is selling products now a days with loss of trust on their products.

LuciferYY wrote:

I don't buy Apple Care as I usually buy new devices after 2-3 years. It's a common problem so Apple should look into this and should have a service plan for it.

It's unfortunate and I agree a screen should last much longer than 3 years. I am using an iMac here, 2015 model. Recently recycled an iMac 2008 that failed because of its power supply, not the screen. All computer makers purchase in bulk parts for their products from third parties, there is an acceptance of a certain percentage of failures or defects, maybe a percent or so. At work, we have quite a number of iMacs and Mac laptops, I noticed that my employer now has Applecare+ on all of them. And we are required to replace all computers every three years at work. I have never seen one of those iMacs fail, so the percentage might be low.

All my personal Macs are laptops or iMacs, which have a lot of chips and hardware fit into very tight spaces. This makes them prone to thermal issues or other internal connector problems, hence I always get the Applecare+ and consider it simply part of the cost. We have actually never made a claim for a Mac (we have had many, so I guess we have actually lost money on buying the Applecare+ there), but my daughter has had two claims on iPhones which resulted in new phones.

My guess is your graphics card has tanked, probably through overheating. *Or* your video cable has gone bung. You can’t do anything about the graphics card in an integrated logic board, so it would cost a packet to replace the logic board. If you hook it up to an external monitor do you have the same issue?

What is the update on this issue now? I have also started getting the same problem with my iMac which I purchased in July 2021 iMac 24inch M1 chip since a month now and still no progress on any solution from apple.

I have an iMac M1 24 inches purchased in January 2022. For now everything is fine, but I'm afraid that I might have the same problem soon. I previously had a MacBook Air and the famous butterfly keyboard problem, which Apple replaced under its repair program.

I know there were lawsuits in the US against Apple to force them to fix this problem for free. I hope it will be the same with horizontal lines now.

If my iMac breaks down too and Apple doesn't fix it for free, I give You my word I will never buy anything from them again. Apple will cease to exist for me, I will go back to Windows.

Of course I will leave feedback and write what I think about them. Maybe if a few hundred thousand disappointed users do the same they will be scared.

So far, reading Your posts I am very disappointed.

I too have the same issue I took this in 2021 and display is costing very high Rupees 54000 in India, Looks like apple should do this for free seems many are having this issue and definitely this seems like a manufacturing defect. :(