How to Fix Horizontal Lines on Your Mac Laptop Screen: A Step-by-Step Guide

Learn effective steps to fix horizontal lines on your Mac laptop screen with this easy guide.

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Step 1: Restart your Mac by clicking the Apple logo and selecting 'Restart'. Step 2: Perform an SMC reset by following Apple's instructions for your specific model. Step 3: Reset the NVRAM by restarting and holding Command + Option + P + R until the Apple logo appears twice. Step 4: If lines persist, connect an external monitor to check if the issue lies with the display or graphics card. Step 5: Consult a professional if the problem remains unresolved.

FAQs & Answers

  1. What causes horizontal lines on a Mac laptop screen? Horizontal lines can be caused by hardware issues, graphics card problems, or display malfunctions.
  2. How do I perform an SMC reset on my Mac? To reset the SMC, shut down your Mac, then use the appropriate key combination based on your model to reset it.
  3. How can I tell if the issue is with my display or graphics card? Connect an external monitor to your Mac; if the lines appear on the external monitor, the issue is likely with the graphics card.
  4. Should I consult a professional for screen issues? If the problem persists after troubleshooting, it's advisable to consult a professional technician for further diagnosis.