If you're using a personal computer, it is possible that you accidentally have some adware program installed on your Win8.
You may need to:
- Run Chrome policy remover (direct download). Your chrome would block the download - plz hit Keep button. Run the bat file as admin (right-click...)
- Report the troublemaker to chrome web store team. (Hit the Details option, and you'll be good to go.)
- Run Chrome Cleanup Tool.
- Install > update > run the free version of Malwarebytes Antimalware & adwcleaner.
- Then reset your chrome sync - remember to backup your personal data like bookmarks first.
- perform a thorough adware & malware check.
Here's the complete
to-do list that would help fix your ruined chrome.