What can be the problem with booting the Macbook Pro mid 2012 system?

Question

macbook

Since yesterday my Macbook Pro Mid 2012 started behaving strangely.
System characteristics:

The first case happened like this: I connected external Genius speakers through a 3.5 mm input, watched a movie and everything hung. I had to turn off the macbook through the power button. Then at loading there was a folder with a question.
Googled it, booted into safe mode via SHIFT + CMD + V. The system booted up, tried to reboot, the reboot was successful.
But the problem repeats when the Macbook comes out of sleep mode or when I turn it off. Moreover, it does not work every time to boot via SHIFT + CMD + V.
When I boot into the boot volume selection mode (by holding down the option key), I have an empty one there. I execute Option + CMD + R + P to reset, then SHIFT + CMD + V and on the 10th attempt it turns out to boot.
What could be the problem? I checked the disks through the disk utility "First Aid", no errors were found.

Answer 1

And what's in the logs?

Answer 2

Check the status of the SSD. Most likely he