It's not uncommon for a PC that has had its UEFI/BIOS set to defaults to not recognize certain keyboards. I have an ASUS P67 board that when the UEFI is cleared will not recognize even Microsoft USB keyboards, I must connect an old PS2 connector keyboard to get into the UEFI by pressing F1. Wireless keyboards and mice also suffer from this same thing. As soon as I load my usual UEFI settings and reboot, my usual keyboard and mouse are recognized.
This may be caused by the "Legacy USB" being set to disabled in the UEFI by default, or due to the UEFI clear, USB and other drivers are not found yet.
Although the UEFI has been reset, they have not yet been saved and applied on the first start, so the PC is basically brain dead. If you could get past the first UEFI reset with a save and exit, your keyboard would likely be seen, but then you're stuck that it's not seen yet. See what I mean? That does not happen with a new board, since the UEFI settings were applied at the factory.
In my case, my OS is on a RAID 0 volume, and after a UEFI reset, the SATA mode is set to AHCI instead of RAID, so the OS volume does not exist yet as far as the PC is concerned. I must get past that first UEFI reset to get the right settings, or any settings before it will work.
I've found no other fix than to use an old keyboard to get past the initial UEFI clear and reset to load some UEFI settings.