Facebook and Youtube in particular.

Tried nslookup the address shows as 127.0.0.1. Checked the HOSTS file, it's fine. Ran Malwarebytes' Anti-Malware (didn't find any problems) and SpyBot Search and Destroy (found 1 problem).

(Not sure if the Spybot made this improvement) now pinging youtube shows the correct address (74.125.71.91) but the browser still says:

Connection to 127.0.0.1 Failed 

The system returned:

(111) Connection refused

Tried ipconfig /flushdns but there are no changes.

Switched to another user but the results are the same.

hosts file:

# Copyright (c) 1993-2009 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

# localhost name resolution is handled within DNS itself.
#   127.0.0.1       localhost
#   ::1             localhost

ipconfig all:

Connection-specific DNS Suffix: 
DNS Servers: 10.1.1.30
208.67.220.220