Mer3ii,
Please try reinstalling Windows Live Essentials (including Messenger) on your computer. Follow these steps:
- Download the Windows Install Clean Up utility from http://wle.mx/D23.
- Install the downloaded file msicuu2.exe.
- Launch the tool from the Start menu.
- Hold down the Ctrl key while selecting all rows that start with either “(All Users) Windows Live” or “Windows Live”.
- Click the Remove button, and wait (!).
- After all entries are gone, close the tool.
- Now download Windows Live Essentials from http://wle.mx/D22.
- Run the downloaded wlsetup-web.exe file.
Did this fix your Messenger start-up crash problems?