This issue is closed. After talking with Microsoft Support for the past few days, they determined this:
We appreciate the prompt response.
After reviewing the logs collected by the Microsoft Support Diagnostic Tool, I was able to pinpoint the cause of the issue. The reason why Windows Live Messenger crashes is because you have NVIDIA ForceWare Network Access Manager installed. This application causes a conflict where it prevents Windows Live Messenger from functioning properly. In order to rectify your concern, either you have to disable or remove it from your computer.
I have here the steps on how to disable it temporarily but to be able to remove or disable it permanently, you will have to contact the NVIDIA support team how to do it. Please follow the steps below:
1. Click Start, click Run, type taskmgr in the Run box and press ENTER or click OK.
2. On the Windows Task Manager window, click the Process tab.
3. Under Image Name, locate Nsvcappflt.exe and click End Process.
4. Click Yes to confirm.
5. Attempt to sign in to Windows Live Messenger.
To disable or remove NVIDIA ForceWare Network Access Manager, please contact the NVIDIA support team at:http://nvidia.custhelp.com/cgi-bin/nvidia....enduser/ask.php
I hope I was able to help you with your concern. Should you need further assistance please do not hesitate to reply back to this e-mail.
Have a great day.
Windows Live Messenger Technical Support
And that solved the issue.