Help! gigabyte mother board or keyboard problem

Help! gigabyte mother board or keyboard problem

My motherboard is Gigabyte
H61M-S2PV and I can’t use my
USB keyboard. I looked in the bios
for peripherals setting but when I
go inside the menu there is no USB
keyboard enable option. There is
only USB legacy something and it
is enabled. Also I am using an USB
mouse and it is working without a
problem.