I have an older PS/2 Keyboard but it won't work without a USB converter, but I have some PS/2 Ports but when I plug it in it would turn on then turn off, in both ports. It just doesn't work??
The keyboard should be plugged into the purple socket, the green one is for a PS/2 mouse. Considering how as little as ?10 - ?15 will buy you a nice new USB keyboard it might be worth considering upgrading.