kvm switch problem

[robednz]

I recently replaced a clone PC with an HP Prodesk 600 G2  that is accessed by 2 terminals [USB keyboards and VGA monitors] via an Aten CS-231 reverse KVM switch, the clone PC has been working fine with this setup , problem is when i install the new HP it won’t recognize the KVM switch… it hangs at the “press esc to enter bios screen” but pressing esc does nothing. I have tried plugging in an extra keyboard in case it was stopping becuase it couldn't detect a keyboard, but it won’t recognize that either, I have looked through the HP bios but can’t see anything obvious …  when i put the clone back in it boots perfectly and i can access the computer from both keyboards and monitor terminals

the HP will boot up fine hooked straight up to a monitor/keyboard

any suggestions please

rob

[robednz]

found a work around that works, powered off the KVM switch before starting the computer, then power on the pc and let it boot through for 1 minute then power the KVM switch and it works!!