Step 7: Plug it in
plug a lamp (or something) into one of the sockets and plug the keyboard into the computer
then plug the power in and turn on your computer if nothing explodes, good.
now the lamp should flash as the computer boot (this is normal)
when the computer is done push the caps num and scroll lock buttons, an led should light up for each button.
if it doesn't than open it (unplug it first) and check all connections.
if all the lights turn on when you only press one button, than check the connections if that doesn't help than it may be the keyboard, not all keyboards work with this