I can`t believe it!!
I have the exact same problem for the last 5 years with my A4000D!!! I haven`t been able to print a thing in years, plus my sound is crap, and sometimes the computer acts as though the right mouse button is stuck down.
I noticed that fiddling with the monitor cable / audio connectors seemed to help with the sound and mouse problem, but since my printer (which works fine on peecee) has been printing nonsence for so long, it def does sound like my CIA`s are screwed.
Where can i send the MoBo off for repair and how much would it cost?