I have had to roll back to previous version of Win XP to solve this problem. On startup all I get is wall paper and the mouse icon nothing else. Its almost as if I have an extended part of an extended desktop without the working bit! ???
Desktop does not render after latest update for Comodo Firewall
That sounds like explorer.exe failed to start on boot. Try launching it through task manager:
Open Task Manager (CTRL-ALT-DEL) → Click on New Task (Run) in the File menu → Type in ‘explorer.exe’ (without the quote marks) and click OK.
This should bring back your taskbar/icons etc.
Afterwards, open msconfig and check that explorer.exe is set to run on startup.
Hope this helps