Ps2 Keyboard problem (solved)

Hi everyone, a friend of mine has lost use of his keyboard on an acer desktop. When he goes to device manager under keyboard it says device is working properly, but location is zero. It was working one night but not the next morning with no user changes. We haven’t got another keyboard to try until later in the week. Not sure if it would be software or hardware related. Any suggestions greatly appreciated. Thanks in advance and Kind regards.
Tried another keyboard PS2 port did not work with 2nd keyboard either (PS2 port appears faulty). Tried New USB keyboard installed and worked instantly. Thanks