I have a compaq presario that I re-formatted and restored using the original cd's. I have a internet USB keyboard model #KU-9978. It will not work. It gives the "found new hardware ; keyboard" message, but when it starts to ask for the driver says "can not install the software because it already exists". A bus plug keyboard works just fine. This USB keyboard works on two other computers (one running ME and a newer compaq running XP, so it can't be a hardware issue.
Soln
IN the XP machine which is working, did you first install the executable driver from Compaq, restart the machine and then
plugged the keyboard to see it play or how did you do that ..
Have you attempted the same procedure in the XP machine which is giving problem