unidentified network win 7 pro

#1
I installed Windows 7 last week and everything was good until yesterday.
I am suddenly not able to connect to internet using my ethernet cable.
I can connect using the wifi though...I just moved my laptop to the kitchen for a couple of hours and then when I took it back to my room and I connected the ethernet cable, I got "unidentified network" and it has been this way since that. Please help:(
 


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