How to find the cause of the drop in interfaces?

Question

Mikrotik

Periodically, all interfaces fall and then rise by themselves, I noticed that this happens at the time of uploading a large file to network storage (but if, of course, a 1GB file can be called large) and also noticed that interfaces also fall at about the same time (at this while the network is empty, i.e. practically no one works at this time) There are no tricky rules

Answer 1

I would change the power supply.
If it does not help, then the piece of iron itself is rather dead than alive.