This problem seems, most of the time, related to malware. Before we get to that, please try the following fixes:
Refresh your DNS by following these steps:
Start >> Run >> cmd
type:
then type:
then type
If that doesn't work,
Then try the following:
Click Start, then Run and type CMD in the dialogue box that appears, and then click OK. Type
into the DOS window that appears.
Also, make sure a firewall isn't blocking the Internet.
If still no luck,
Check your HOSTS file.
It's located in
Examine the content of your HOSTS file. We do not need to worry about any line that begins with an # because it is ignored by Windows. Also, the line "127.0.0.1 localhost" or "::1 localhost" can be safely ignored, because it is a standard entry.
A HOSTS file can be used to control Web page to IP address associations.
Anything else that appears in your HOSTS file without an # at the beginning, apart from the "127.0.0.1 localhost" or "::1 localhost" lines, should be viewed with suspicion when we are trying to diagnose the cause of "Page cannot be displayed" errors. The quickest way to test for HOSTS file involvement is to right click the HOSTS file, then select Rename. Add the letter X to the beginning or end of the file name and then ok your changes. By changing the name of the HOSTS file, we stop your web browser from using it, and therefore resolve any issues caused by the file.
If still no joy,
Download a copy of HijackThis and save it to your desktop in a folder. Do a scan and save the HijackThis logfile. Do not remove anything. Post your log file in "Post your Problem" in OS Support. Here's the link to the HijackThis download:
Please login or register to download
or
Use alternative download link
I will look at it later or a staff member from this section will help you.
Do not post in OS Support FAQs.

