Internet connection shows yellow exclamation mark
If you can connect to your home network but not the internet then most probably the problem is because of your computer being connected to multiple connections (check under Control Panel->Network and Internet -> Network and Sharing Center: view your active networks)
Some tricks that have worked for me in past are:
- Disable the Bonjour service/ Double click on the service and select Automatic (delayed start).
- This service can also show up as ##Id_String2.6844F930_1628_4223_B5CC_5BB94B879762##
- It is usually installed by Adobe CS3 or Itunes
- To permanently disable (A harsh step): rename the folder Bonjour to BonjourOld in Program Files(x86)
- Run Command Prompt as Administrator
- Type NETSH INT IP RESET, press ENTER
- IPCONFIG /FLUSHDNS, press ENTER
Make sure to Disable and Enable your Network Adapter after every solution. You never know when you will get lucky.
Some other things I tried in the process, which may have nothing to do with the problem
- Disabling Wired AutoConfig service
- Disabling WLAN AutoConfig service