We need to reset Chrome back to defaults to completely clear out what is going on.
We can keep the bookmarks by exporting them - Export Bookmarks
Then I need you to go Google Sync and sign into your account
scroll down untill you see the "Stop and Clear" button and click on button
At the prompt click on "Ok"
Now we need to uninstall chrome
I want you to uninstall Chrome and if asked about user data or settings then remove this also
restart the computer and reinstall chrome, You can download The latest version from here - Google Chrome
After you have Chrome reinstalled please check things out and let me know how it is doing.