mac usb keyboard not detected

Hello everyone,

I'm using a Mac Book Pro Retina 15" end 2013.

I'm using an external USB mac keyboard. Sometimes it works well and sometimes when I restart my computer, the keyboard is no longer detected.

I can also reproduce this bug when I use my keyboard, then disconnect the keyboard, then I put on stand by my laptop and then re open my laptop and connect my keyboard, now it is not detected...

I tryed to restart my laptop, it doesn't work. I also tried CMD + ALT + P + R when I restarted my mac.

To fix the bug I need to turn off my laptop, wait couple of hours and restart my mac...

If anybody have an idea. Thanks