pls my system is not showing the desktop background, after booting the system will just hang, it will only show my wallpaper and no other thing, and i will not able to shut it down, or else i turn it off form the UPS, pls help out

Boot the system when u see ur wallpaper, press ctrl+alt+delete to bring up task mgr. Click new task &type 'explorer' if you still dont see ur desktop, click new task again and type 'nusrmgr.cpl' & hit enter. This will open the user account window. Now add a new account with admin privileges, then restart the machine and log into the neW account. you can now move ur files from the old account and safely delete it.

thanks for the great info , i will let u know if it works, thanks once again