My iMac has a black screen with a stop sign in the middle. I researched and should install the utility disk that came with the iMac. I cannot locate it as this iMac is out of warranty and I've moved since the original purchase. Is there another way to be able to reinstall it?
We could more easily provide assistance if we knew which model iMac. Identify your iMac model - Apple Support
If your Mac won‘t turn on, read this support article --> If your Mac doesn't turn on - Apple Support
Additional tips about making sure that accessories are getting enough power. Frozen iMac - Apple Community
Apple hasn't produced boot devices in a long time now and relies upon Recovery. See: If you can't start up from macOS Recovery - Apple Support and related: Disk Utility for Mac: Repair a disk using Disk Utility Repair a storage device in Disk Utility on Mac - Apple Support
How to reinstall macOS - How to reinstall macOS - Apple Support - including different recovery keyboard options.
This is all that i can find. iMac 27' Quad Core i7 purchased in 2014
I can't locate my utility disk
