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Message: [QUOTE="TonyAguila, post: 1570971, member: 25201"] Seems to me like you have an errant system extension which survived the transition from Mojave to Monterey. The question is whether the extension was user installed or part of macOS. If your installation of Monterey was not a “clean” installation, meaning it was an update on top of the old system (Mojave), some parts of the old system could have been carried over into the new and can be the source of conflict. If I were dealing with this, I would just plan on completely erasing the drive and doing a fresh installation of Monterey. Of course I would not start until I know I have at least two Time Machine backup drives, and maybe at least a clone of the existing startup drive. From recovery, I would use Disk Utility to erase and reformat the drive, then install macOS 12. I think the current version is 12.1. After the installation, you can migrate your data from Time Machine. So, unless the cause of your problem is hardware-related, you should be good—unless the problem is from an errant user extension or app setting, in which case it will be reinstalled with the migration. I would elect to create a new user first, and test how the system runs. If everything looks good, you can proceed with migrating your previous user data. Don’t delete the new user. If the problem returns when you log into your old account then chances are, your system overload is coming from your user data. You may want to make the new user your permanent account instead and copy your older information as you need them. In summary, (1) do the Time Machine backups; if not possible because of the system overload, do the backup in Safe Mode. (2) Boot into Recovery, launch Disk Utility and erase the startup drive. Erase at the top (device) level, deleting all containers and volumes. (3) Install macOS. Recovery should default to macOS Monterey. (4) Startup and create a new user… following the above procedure. I forgot to mention also that if you can, create your second user account (also admin) before anything else. If you can restart and log into the new user account and no system overload happens, then you will know that the problem is coming from your older user data. But my bet is on a bad kext file in /System/Library/Extensions which will be difficult to pinpoint and can only be solved by a clean installation of macOS. [/QUOTE]

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