I uninstalled Windows Live Messenger and reinstall it again same problem.
I uninstalled Windows Live Messenger, and install V7.5 same problem.
Please see below pic to get the idea what does it happen when I login
http://img292.images...oginproblj0.jpg
Friend of mine used the laptop day before the problem occured, I do not have firewall installed yet, and I asked him if he had done something, his answer was : No