Hi
Try going to Network and Sharing Center from the Icon on the right side of the task bar.
Select the Change Adapter Settings option.
Select you connection and click disable this device.
Wait a few seconds and re-enable it.
If this reestablishes the connection look in the installed programs list and see if you have Bonjour Services installed.
If you do try and uninstall it, and see if the problem goes away.
The other option is to go into Device Manager and uninstall your network adapter.
Then reboot you computer and let Windows reinstall and reconfigure it.
This might work too. These things are always kind of a matter of trial and error.
It's possible that there's something wrong with the computer but it's more likely that it's...