Final Cut Pro 10.4.7 tested using a complex 90-second project with a variety of media up to 8K resolution. Next I’ll try reseating the memory in the bottom.
Unplugged it and held down the power button for 5 secs, no avail. I’ve unplugged everything from the back and tried restarting, to no avail. Screen doesn’t light up at all, it just beeps once every 10 secs or so.While this feature is only enabled by default on the MacBook, PowerChime.app–which causes the sound–is present in macOS on any Mac. But the MacBook Pro and Air don’t–unless you enable this hidden feature. The new MacBook, first released in 2015, makes a chime sound every time you plug the MacBook in, just like the iPhone and iPad.