Won't recognize keyboard and mouse even in BIOS

I have an old Windows XP computer but there is a problem and it is that does not recognize the keyboard or the mouse (both USB because I don't have a Ps/2 keyboard) in the bios or in Windows XP.

I have rebooted the BIOS (removed and changed the battery for over an hour) I have tried all the USB ports (external and internal of the motherboard) and I have also tried other keyboards and nothing.

Does anyone knows what could it be?




Thank you in advance