Your 1394 adapter is otherwise known as FireWire, and is usually used
for video cameras and iPods. It has nothing to do with your Ethernet
connection (although I haven't seen an entry with a red line through it).
In fact, in addition to the video cards for which they are perhaps
better known, nVidia makes motherboards which have built-in Ethernet
adapters, so in fact nVidia does make your Ethernet adapter.
I couldn't find anything helpful with a quick look around the nVidia
site, and in any case, you probably need to know *which* nVidia mobo you
have. You can determine that by running a system information utility
such as Belarc Advisor (
http://www.belarc.com/free_download.html) or the
even more comprehensive tool fromhttp://
www.gtopala.com/
Once you have the correct model and version info (and one or the other
of those tools may also give you more detailed info about your network
adapter), ask your question in an appropriate nVidia forum:
http://forums.nvidia.com/index.php?act=idx
[Alternatively, if you have a name brand computer, go to the computer
manufacturer's web site, rather than nVidia's.]
Given that the light used to be green and now is orange, it probably
means that either your cable is bad, or your network adapter is failing,
or your network speed has dropped to 10 Mbps from the more usual 100
Mbps (again, probably because of impending hardware failure). But these
are only guesses, and you will get more accurate info from nVidia or
your computer manufacturer.