Microsoft Knowledge Base is a huge source of information, which contains more than 25,000 articles written and collected troubleshooter experts Microsoft for several years. This source is obtained at zttp://support.microsoft.com. it's just that, the database, perhaps a bit too complicated for novice users. So in some data info imposed custom systems, which may be easier to understand.
Like your first time visiting, try to check the list of all products that contain articles that may be related to your issue. For example on some versions of Windows, applications that are relevant (including specific versions), and or hardware specific. If no articles about OS in the list, could be the theme of the OS already included in existing articles.