I also have been doing networks and windows computers for a long time. Would you be so kind as to list those factors that convince you that it is a network problem. Keep in mind that I have two other computers attached to the same network which interact perfectly with the 3880. I am convinced that it is a conflict within my PC, perhaps withing the driver.
As I said, I've seen no evidence of any other issue that might be involved, and the most common problem is network related. However, without a proper network map (be it text or drawn - doesn't matter) it's simply not possible to further diagnose the issue and it comes down to shooting in the dark.
That you have other computers working does not in any way preclude network related issues. It is extremely unlikely to be a driver issue, other than a configuration issues (i.e. the wrong port selected - which would be a network related issue...) if it continues to fail after a reinstallation.
May I respectfully suggest that if you have extensive network and Windows experience that a proper network map should be easy enough to provide and allow us to properly diagnose possible issues (which might include ruling out a network issue).
Troubleshooting should be a systematic and thorough process - not random guesses.