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Message: [QUOTE="TonyAguila, post: 1570977, member: 25201"] Have you looked inside the extensions folder (/System/Library/Extensions)? There are literally hundreds of .kext files in there, along with about a hundred or more bundles. Are you thinking of opening and inspecting each of those? A lot of the file names are very cryptic, at least to regular users like me. And who knows what will happen if you start removing those files from their folder, what, one at a time, or in batches? I think it will be easier to do a clean install of macOS in order to have a fresh set of system files to start from. Doing a Safe Boot can repair a lot of issues because part of the process involves clearing caches and performing disk checks (fsck). It’s what I usually run when weird things start to develop in my Mac, along with the usual parameter RAM (PRAM) reset, system management controller (SMC) reset, Spotlight reset, etc. A valuable tool, as well, is Activity Monitor, although a lot of the process names on the list are hard to decode. As always, troubleshooting your Mac can be very gratifying from all the things you can learn from it. As an alternative to going through Recovery to reinstall the system, you can keep a copy of the latest macOS installer or combo updater. Running them, in Safe Mode, or from an attached bootable volume, will probably fix the majority of your system problems. [/QUOTE]