Mobo Ethernet broken after installing GTX 1080 + Other issues

[Nonplussed]

After swapping my MSI R9 390 for my ASUS GTX 1080 A8G, I've noticed that no matter what I do, my ethernet on my Asus z97 pro gamer keeps showing the yellow triangle.
Furthermore every time I try to shut down the system the 'shutting down' loading circle sometimes just freezes and the computer refuses to shut down unless I hold the power button.
Should I just repair/reinstall windows or are these issues fixable?

 

[J_E_D_70]

Did you uninstall the amd driver in safe mode using DDU? Would try that first.

 

[Nonplussed]

Did you uninstall the amd driver in safe mode using DDU? Would try that first.
I've already done that after removing the AMD card. While my card was removed and the drivers were uninstalled the Ethernet was working fine, but after installing the 1080 and downloading drivers, the driver download froze so I DDU'd it again. After successfully installing the nvidia drivers the 2nd time the issue happened.

 

[J_E_D_70]

Another step would be to clear the CMOS to try and get the ethernet and GPU on different interrupts. How to do that is particular to your mobo.

Your manual says that it has two x16 slots but single card should go in first one for better performance. If trying to clear CMOS doesn't work can try the PCIe_2 slot just for giggles.