the iMac (see Serial Number from 2014 when booted, it shows blue vertical lines. Sometimes it switches on and performs normal. But most of the time it does not work
[Vom Moderator bearbeitet]
iMac 24″, macOS 26.1
Hallo Vielen Dank, dass du dein Anliegen in der deutschsprachigen Support Community gestellt hast. Gerne helfen wir dir mit deinem Anliegen weiter.
We are the German community, but it seems that your Mac has a hardware issue. I would recommend to get a checkup at an Apple Store or certified service provider.
IMAC with Serial Number: ***************
