I also sometimes get this problem and it is very frustrating

, restarting the modem is the only way I can cure this. Sometimes my network is identified but it says no internet connection when infact I can use my internet from the WLAN of my laptop
In Event viewer I get an error "dhcp-client", The error is :
There are many such errors at regular intervals of time in my event viewer
The thing is that my adapter is named "Local Area Connection 3" and Im not able to remove the 3 from the name, it says that I already have used that name on some other network adapter but i do not have any other network adapter