iMac no longer detecting Dell monitor

Bitdefender, the VPN and CMM are your problem!!!!!!

Not only are they 100% worthless they cause nothing but problems and absolutely nothing that Mac OS cannot do on its own! Please locate the developers uninstall instructions and follow to the letter for each app!!

Then restart in Safe Mode and restart normally. For insurance download FindAnyFile and have it search for:

• Bitdefender
• the VPNs name
• CleanMyMac
• MacPaw

and have it trash ANYTHING with those names in it! Empty the Trash. Moving forward to keep Mac OS Fast, secure, bug free and stable keep it up to date and restart the computer about 1x per week. Finally, never ever install any of the following types of third party apps:

• Antivirus Apps
• Cleaning Apps
• Security Apps
• VPN Apps
• Maintenance Apps

Do you have any of the following third party apps installed on your Mac?

       •      Antivirus Apps

       •      Cleaning Apps

       •      Security Apps

       •      VPN Apps

       •      Maintenance Apps

I’d suggest, LuckyTCB, that you get rid of ‘em- they often cause more problems than they solve… anyways, try doing a reset SMC and 3-4 Pram zaps on startup… see this link :

https://www.macworld.com/article/224955/how-to-reset-a-macs-nvram-pram-and-smc.html.. also, reboot, holdi g down the shift key until you see the words “safe mode” on your monitor… if the problem goes away, then there you go… with safe mode, which only loads basic stuff, then it’d be a dodgy app or piece of software which causes your problem

john B