You computer was affected by browser hijacker virus,and you can try the procedure below to solve your problem:
Step 1: End relevant processes
Open Task Manager by pressing Ctrl+Alt+Del or Ctrl+Shift+Esc keys together. While the
Task Manager Windows opens, find out and select all related processes in the
“Processes” tab and click on “End Process” button to stop all.
Step 2: Show hidden files and folders
Click Start button and select Control Panel from the Start menu list, click Appearance
and Personalization link, and then double-click Folder Options. In the Folder Options
Windows, click on View tab. Under Advanced settings, tick Show hidden files and
folders, uncheck Hide protected operating system files (Recommended) and then click OK
button to go on.
Step 3: Delete related registry entries from Registry Editor
Attention: Be always to back up your PC before making any changes.
Click Start button and navigate to Run. While a command run box appears, type
“regedit” into the box, press Enter or press OK button.
In the Registry Editor, search for the registry entries associated with this redirect
virus and delete them from your computer.
Step 4: Find out and delete the files associated with the redirect virus
Step 5: Repair infected browser settings
Open Internet Explorer. Go to Tools and select Internet Options.
Click on Advanced tab, Click on the Reset button under Reset Internet Explorer
settings. While a confirm Windows pops up, Please click on “Reset” button once again
to confirm your operation.
Open Mozilla Firefox, click on the Firefox button at the top-left of corner, go over
to the Help sub-menu and select Troubleshooting Information option.
Click the Reset Firefox button in the upper-right corner of the Troubleshooting
In the confirm Window, click Reset Firefox button to continue.
Launch Google Chrome, go to Tools and select Extensions Option.
Select Settings on the left side. In the “On Startup” area, click on Set pages, and
then remove related default page. In the Appearance area, select “Show Home button”
and then click Change to change homepage back. In the Search area, click Manage Search
Engine button to repair the search engine.
Step 6: Restart your machine
If you have any doubt, you can refer to this article:http://www.malwarefixnow.com/remove-consumer-feedback-net-browser-hijacker-removal-guide/