Windows live mail will not open in Win 8 HP desktop. Worked great for months.

Have read all 500 posts & copyied 30 pages of great tips.  Tried WLM repairs, several uninstalls, restored back 2 months, clean boot.   WLM works on my small laptop (Win 7 Starter), but freezes up  with blue circle on Desktop.  Would be grateful for help, as we use it a lot as it is better than regular provider's email format.