On boot-up, no taskbar, icons, or start menu. Help!!!

Nothing works. Task manager doesn’t start, Windows CD won’t boot. When I do ctrl-alt-del, the menu pops up, but when I click on task manager, nothing happens. When I F8 and try to boot into Windows with command prompt, that doesn’t work either. Safe mode comes up the same as regular, only wallpaper with no icons, menus, etc.

HELP!!!!