Since I no longer get into the internet lights also do not expect the green light?
Suspect therefore that it break could have, on the evening when I play BF 2 v2 for a long time.
Was thrown out of the game and have then the computer shut down.
After the shutdown, as the PC has not wanted to go out and I waited for about 15 minutes and there were no updates to install, can have been so not the reason.
The next day I never saw on the Internet.
Use now an inserted USB stick.
Before that I had to get cable with a Wi-Fi but that was not good, because too short and intended only as a stopgap.