My recommended edit:

> **Questioners must have required access to fix the problem.** Questions must be posted by someone with the appropriate access to obtain diagnostic and debug information and to apply suggested fixes.  Some questions are more appropriately addressed to an OEM/VAR or to the party that manages or warrants the hardware/software in question.  We recommend reaching out to these parties to receive further assistance on the issue.

Just a suggestion.  Figured it's better to start off under the same flow as your first bolded sentence and then talk about OEM/vendor stuff.