Search c:\Windows\System and subdirectories (or even the whole C, may be in root on some) drive for the "hosts" file. Open it in notepad. At the bottom you should only have one entry.
127.0.0.1 localhost
any others, delete. You will probably see PcTorques IP . Delete them and save the file. If this doesn't have entrys, check other hosts files like lmhosts and such. They should show up on the search.
Example good file:
# Copyright (c) 1993-1999 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host
127.0.0.1 localhost
---------------
reboot after you save.
If this isn't the problem, you may have your firewall set up to either block sites, or have web filtering turned on to do the same.