After the proxy settings canceled, then, has an automatic check on

Performed using software over the wall over the wall, when closed over the wall after the software finds, not the Internet, because setting up a proxy server, proxy server settings canceled check, found that access to the Internet, but after a while, they checked on by default

Browse through the information found:

It can run the registry cmd window enter regedit

Into this directory: HKEY_CURRENT_USER / Software / Microsoft / Windows / CurrentVersion / Internet Settings / Connections

Find connections through the directory, delete the entire folder