Yes, you assumed correct. It doesn't have an old ps2 keyboard port. I tried the same usb port when connected to the monitor and the TV, but can only get into BIOS only on my TV. So, the usb port doesn't seem to be the issue. When I switch on the PC when connected to my monitor it directly boots to the windows lock screen. It doesn't show the Aorus logo (which it did in the beginning) or the windows logo. Directly from no signal to Windows lock screen. But, when connected to the TV it shows the Aorus logo and the StoreMI screen, and can get into BIOS very easily.