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HP z400 ps/2 keyboard not working

HP Recommended
HP Z400 Workstatio
Microsoft Windows 8.1 (64-bit)

Hello everybody I have a hp z400 workstation wich have 2 ps/2 ports (1 for keyboard  and 1 for mouse) I cant use my keyboard on any of them but I tried it on another computer and it works fine, i have the last version of bios and doesnt have any adjust for the ps/2 ports. The model of the keyboard is: Acer 6312-TA

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if the ps2 keyboard works on another system, then you may have it attached to the z400 mouse port instead of the kbd port


since this is a very old kbd model, it's possible that it draws to mich current from the z400 ps2 port which was designed with newer low power kbd's in mind


if possible try another (newer model) kbd on the z400 if that also hfails to work


 you have a bad kbd connector on the z400, or a defective ps2  circuit on the motherboard

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