Re: (WW) NVIDIA: No matching Device section for instance (BusID PCI:0:3:5) found
That "Co-processor" device doesn't look like a graphics device. I don't know why your X server thinks it is one. You can just ignore that message.
As for the 32-bit ARGB visual thing, you can't have 32-bit visuals without the Composite extension, just like the message says. If you don't have the Composite extension enabled, that's expected. See the README for more information.
For updating the VBIOS, please contact your graphics card vendor.