I have been using a old POWERMAC G4 to run my business program. I had shut nit down and when I restarted the keyboard and mouse will not work tab all. I had a second G4 and it will not allow the keyboard or mouse to operate, either. I tried three different keyboards with both CPUs with the same results. I had been connecting my keyboard and mouse through a USB hub. The USB hub power light come on OK but will not operate the keyboard or mouse. I tried connecting the keyboard and mouse directly to the ports on the rear of the CPU with no luck, either. Does anyone have an idea of what is happening?
