hi when i start my laptop the screen starts with the error showin " failed to load minibomn.the file shell.css required in your sscommon/skis/minibomn/css. to fix the problem check the skin name in your config fle or reinstall the application. this window will be closed." this message come and sometimes it also show that it failes to load dellskin.

please provide me with solution my laptop is dell inspiration 1720