since moved house dell pc not working, you can hear the pc running but no lights on keyboard, monitor screen says "In power save mode press any key on keyboard or move mouse" tryed pressing buttons but nothing, scrren stays there, tryed my monitor on freinds pc and works fine, so then tryed freinds flat panel monitor on my pc and scrren says " No video input" & thn tryed another crt monitor but just blank scrren with that?

Thanks