Nvivida card not found after upgrade

[Valtam]

Since the Intel will never be used I would disable it in the Bios as a first step.

Your card is a 'legacy' card, not very well supported but may work under the 173 driver.
You've really done so much to try and get that card working, you're now at a stage where there are a mixture of attempts to get it working and its all kinds of messed up. A 15 minute reinstall is a better use of your time. Then choose the 173 drivers if they are listed in Install Drivers. If they don't work its time for a card upgrade, and not worth the hassle of mucking around with the old one, its only going to cause frustration.