USB-C broken no connectivity on any usb-c port.

As per title. I've tried the various troubleshooting steps (holding the power button down to get to the boot select, however can't do anything as it won't recognise any keyboards/mice). I've tried multiple mice/keyboards and nothing works. It's like the ports aren't supplying power at all. It's been running happily for a while since I bought one when they came out (like within a week or 2 of launch so it's likely well out of warranty now). Are there any troubleshooting steps that I'm missing? I've tried to find support articles on this but they all refer to the SMC reset but that's irrelevant for this machine as they don't have it. There is no power draw on the usb-c (every single one) so I'm assuming it's a fuse that's gone somewhere? I want to exhaust all options before getting it under the microscope. It still boots but can't do anything with it, I'd happily use it as headless machine in my homelab even if the usb-c is toast. Is there a way to remote log in to the machine. It has RDP enabled but since power cycling it I can't seem to connect as it's waiting for a user to log in. This was the primary way I was interacting with the machine before the USB-C died anyway.