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Late 2013 iMac here. What does it mean when I see horizontal lines appear briefly on my screen? Happens occassionally. Lines are dark colored and on the sides, not in the focus window.
iMac 27″, macOS 10.15
Hello Evlogia,
It could mean that your video card or display might be on the way out. I'd consider making an appointment at an Apple Store or Authorized Service Provider so they can run diagnostics.
Contact Apple Support:
| Call Apple Support 1-800-APL-CARE
| For International Numbers or ASL support, click here:
| Contact Apple for support and service - Apple Support
|
| Chat with Apple Support
|
| Get Started Online
Hello Evlogia,
It could mean that your video card or display might be on the way out. I'd consider making an appointment at an Apple Store or Authorized Service Provider so they can run diagnostics.
Contact Apple Support:
| Call Apple Support 1-800-APL-CARE
| For International Numbers or ASL support, click here:
| Contact Apple for support and service - Apple Support
|
| Chat with Apple Support
|
| Get Started Online
Horizontal lines appear briefly on my screen?
