Maybe this easy step will help you,
1) First of all delete the Local State file which holds some of the Custom Settings
2) Rename the Default folder which has all the Google extensions, Bookmarks, History, Jumplist icons, etc. The reason why we are renaming it is because if it's not the cause of the random freezes and crashes, then we don't have to lose all this information.
Or you can click the link for more solutions Fix: Google Chrome Freezes or Crashes on Windows 7