MacBook usb bus problems

Hello everyone,

thank you for any feedback you will get me.

I try to be short:

I was working with a MacBook 2008, I noticed some strange signal since the hard disk connected to the USB port disconnected by itself.

At the last restart then it happens that the keyboard, the trackpad and all the external ports no longer work.

I boot in single user mode and it gives me back "Apple Bus Power USB controller: request service power locked: power supply unavailable, assuming successful power for PRT5" (I attach pic).

In my opinion it should be a hardware problem.

After all, I cannot do anything at the software level because I have no way of communicating with the system, although it starts normally.

What do you think?

What could I do?

Thank you again.

All the best.

Alessandro