I'm having some trouble with the infotainment system on my 2015 DS5. I have a repetitive "USB Device not available. Power supply fault. Please disconnect all devices" (nothing is plugged into the USB port in the center console), and even if I try plugging something in it seems there is no power to the USB port.

Can I get some guidance on how to troubleshoot and maybe fix the problem please? Many thanks!
My car's VIN is VF7**************[VIN obfuscated, can be read by forum staff]