Hi,
1.Did you make any changes on the computer prior to the issue?
2.Does it happen with all the browsers?
Method 1: Reset Internet Explorer settings
Use this method if you are using Internet Explorer
Refer the site mentioned below:
How to reset Internet Explorer settings
http://support.microsoft.com/kb/923737.
Disclaimer: The Reset Internet Explorer Settings feature might reset security settings or privacy settings that you added to the list of Trusted Sites. The Reset Internet Explorer Settings feature might also reset parental control settings. We recommend that you note these sites before you use the Reset Internet Explorer Settings feature.
Method 2: Reset the Internet Protocol
Refer the site mentioned below:
How to reset Internet Protocol (TCP/IP)
http://support.microsoft.com/kb/299357.
Method 3: Reinstall the network adapters
a.Click on Start, type devmgmt.msc in search box, hit enter
b.Right click the device and click uninstall. Restart the computer and let the driver be installed.
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