Bev0404 wrote:
The volume on my 2 year old Macbook has demonstrably decreased in the past month. I can't watch videos online without having my airpods in, which gets annoying after awhile. I've checked the sound preferences; anybody else having this issue? I can hear the volume from each speaker (softly) but it's really really hard to hear.
If you can't hear sound from your Mac speakers - Apple Support
Use Apple Diagnostics to test your Mac
Use Apple Diagnostics to test your Mac - Apple Support
no insight or resolve—
To trouble shoot further you can:
—SafeBoot How to use safe mode on your Mac - Apple Support
Takes a bit longer to get to the login screen, does a quick disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc.
Login and test. Reboot as normal and test. Caches get rebuilt automatically.
In Safe mode third party system modifications and system accelerations are disabled, it removes malware, etc hampering smooth operation, however a reboot will put it back to normal mode.
This test will tell you if third party interference; extensions etc are not loaded in safe boot mode.
—Test issue in another user (or guest user) account Set up users, guests, and groups on Mac - Apple Support
This will tell you if it a universal issue or isolated to your user/admin account.
Uninstall all third party apps that are Cleaners/Optimizers/VPN/Anti-Virus
all known to cause issues on the macOS
