My computer runs on XP professional service pack 3.Whenever I log on my window profile, itís taking a long time for window loading, and after loading the star bar and desktop icon are not visible for 4-5 minutes and sometimes it do not load at all. I have done with both MBAM and Microsoft security essentials but I did not found any problem. The computer is not connected with the internet when the process is going on and I have not made any other system changes. I can access my computer by using task manager while icons and taskbar are not showing. By using task manager explorer.exe is running. By using the new task button to run it again does not do anything and not even end the process.