Black horizontal lines on the screen

juliabooo wrote:

Since yesterday I have horizontal black lines all over my screen. (I have a Macbook pro 2017 13inces.) Does someone know what's the problem and how to fix it?

I need help :')

You can try

—resetting both resetting the SMC https://support.apple.com/en-us/HT201295

and resetting NVRAM/PRAM http://support.apple.com/kb/ht1379

—test with a external monitor, this will tell you if GPU or isolated to your screen.

—dual graphic cards launch, verify iod both cards are one

—screenshots are taken directly from the GPU this bypass the a display anomaly, as another test.

—if it is isolated to the display then I suspect it is the projector cable

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"—

https://www.apple.com/retail/geniusbar/

Outside the USA

https://locate.apple.com/country

From iOS device using the app to make a online Genius Bar appointment is easy:

https://itunes.apple.com/us/app/apple-support/id1130498044?mt=8

“Mac notebook, contact us and we'll send you a box you can use to ship it to an Apple Repair Center. We'll return your repaired product to you as quickly as possible. Depending on where you get service, you might be able to check the status of your repair online.” Start a service request https://support.apple.com/mac/repair/service

Call Customer Support (800) MY–APPLE (800–692–7753)

or on line https://getsupport.apple.com/

or call AppleCare Support at 1-800-APLCARE (800-275-2273)

Outside the USA—Contact Apple for support and service by phone

See a list of Apple phone numbers around the world.

https://support.apple.com/en-us/HT201232

Learn how to get your Mac fixed and how much it will cost.

https://support.apple.com/mac/repair/service

Get your Mac ready for service - Apple Support https://support.apple.com/en-us/HT209095

juliabooo Said:

"Black horizontal lines on the screen: What's AppleCare? I think i don't have it."

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How to Check if an Option:

Apple Care Plus is for MacBook Pros. In everyday term is the "Protection Plan" for Apple.

A. To Verify the Status Go Here:

1. Check Here: Check Your Service and Support Coverage - Apple Support
2. Enter: your Serial Number*
3. Enter: the Code
4. Click: Continue
5. Verify All is Checked

* Finding Serial Number: Find the Model and Serial Number of your Mac - Apple Support

B. To Purchase One:

If you ever had time to purchase one, you'd use these sites:

• Info on Buying: Buy an AppleCare Plan - Apple Support
• Choose Your Product: Add-Coverage - Apple Support

If the black horizontal lines appear on alternating lines on the whole display almost like scan lines, then this is a hardware issue with the built-in Display Assembly. @leroydouglas' suggestion for testing with an external display (enable mirroring to be sure) will confirm the diagnosis.

juliabooo Said:

"Black horizontal lines on the screen: Since yesterday I have horizontal black lines all over my screen. (I have a Macbook pro 2017 13inces.) Does someone know what's the problem and how to fix it? I need help :')"

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Based on Personal Experience:

My 2017 MacBook Pro had its screen replaced 11 times. I was informed that the connector between the screen and the LogicBoard kept disconnecting. It was covered under AppleCare, and I didn't pay a penny for the replacements. Having done a replaced screen 11 times, and being calm about it, I was given a free $2,500 upgrade, for no more than the price of an AppleCare. It was deemed a Faulty Device. Point being: A disconnection may be what is going on here.