Pink vertical lines 2017 imac 21.5'
I have a singular line of pink pixels down my screen, I've had this problem for over 2 years now and am unable to find a successful answer to my problems.
iMac 27″, macOS 10.15
Welcome to Apple Support Communities.
This is a hardware problem, and you must take it to an Apple Store or an AASP for service: Get Support.
-Jack