2017 iMac not recognizing external monitor - 2025 updates?
I've inherited this Mac and would like to set up an external monitor.
Apparently, prior to the Ventura update, it worked fine and from internet searches, it was not an uncommon problem - but there never seemed to be a specific fix.
This old thread for example, never resolved: 2017 iMac not recognizing external monitor - Apple Community
Hardware:
iMac Retina 5k 2017
OS: Ventura 13.7.3
External Monitor:
BENQ (worked previously)
Cables: Firewire to HDMI.
Tried:
Everything this person on Reddit tried: https://www.reddit.com/r/mac/comments/12uxn2p/imac_no_longer_recognizing_external_monitor_after/
Other than wiping/reinstalling, as per this, which I'd rather not do for obvious reaosns: "I ended up having to erase my hard drive and reinstall and earlier version of the Mac OS. I went with Monterey, one back from Ventura. It worked."
Thanks in advance.
