Chrome and IE v11 not shows error unable to connect proxy error [Closed]

Report
-
Hello,

In my pc i have chrome, IE and mozilla but only mozilla is working fine and other shows error that unable to connect to proxy server .i checked that in LAN and other proxy settings are correct but still it is not working. i have win8.1 and win7 professional (dual boot) and chrome is working fine when using win7.
I checked my pc using AVG anti virus it shows that my pc is ok.
pls help as soon as possible.