It just sounds like the wireless connection is not being made. It also
sounds like you have done just about everything we could suggest. Have
you tried using both PS/2 and USB at the same time? Try turning the
computer off, plug in both PS/2 and USB, turn on the computer, and try
connecting. Also, does the computer even detect the wireless transciever
or keyboard or mouse? Is the keyboard wireless as well and are you
using two wireless transcievers or do they work together?