This problem can be caused due to a browser hijacker. A browser hijacker is a type of malware designed to change your browser's settings.
If you have a Norton product on your computer, the first step to fix this is to perform a full system scan. If the scan did not detect any threat, or you cannot perform a scan, run a scan using Norton Power Eraser. Norton Power Eraser is a free, downloadable tool that uses aggressive methods to detect threats.
Download Norton Power Eraser.
Select the location as Desktop, and then click.
To run Norton Power Eraser, double-click thefile.
If the User Account Control window prompts, click or .
Read the license agreement, and click.
In the Norton Power Eraser window, click the icon.
By default, Norton Power Eraser performs a Rootkit scan and requires a system restart. When you see a prompt to restart the computer, click Settings, and uncheck the option .. If you do not want to include the Rootkit scan, go to
After the computer is restarted, the scan starts automatically. Follow the on-screen instructions.
Wait for the scan to complete.
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