http://www.nikonchat.com/system-error-coolpix/

What system error 4 above 0 mean?
It is a Nikon Coolpix digital … I can not delete photos, or even get the menu.
Call the help line Nikon 24/7/365 at 800.NIKON-UX. You should not be removed from images in any case. Copy all image files to your computer (preferably with a card reader) and then the cameras format feature, format the memory card.
Nikon CoolPix S220 survives!!