I have been using NoMachine to connect to a Linux box in my lab running Ubuntu 11.10. I was connected and running a program when the Linux machine crashed. When I restarted the machine manually, it wouldn't connect to the Internet. It doesn't recognize the ethernet cable that is plugged in--it says "No network connections available" in the network menu, I tried pinging 8.8.8.8 and it didn't work, and when I try to reload the networking settings via command line it says "Failed to bring up eth0". It is set to have a static IP address.

I didn't change any settings before it crashed, I didn't install any updates recently, and I made sure that it wasn't just the cable failing. I'm not sure what made the internet suddenly stop working, or how to fix it. Does anyone have any ideas? Is there any more information I need to provide to be helpful?

Thanks in advance!