I'm remotely investigating issue with my friend's WIN XP computer. The browsers (Chrome and IE) won't show any pages but message with err_connection_reset in details. I've tried to perform "telnet google.com 80" and send there "HEAD / HTTP/1.0" from console and everything went fine, but browsers refused to give me anything. I've checked for presence of firewalls and proxy servers in the settings, but nothing seems to be there. What else to check?