So I bought pokemon white a few weeks ago but now it doesn't want to work. Every time I try to play it I get a blue screen that says save data cannot be accessed, please turn off game and try again. But now I can't figure out how to delete it. I've looked everywhere but nobody knows how to.
Can it be deleted from the ds title screen or is it useless?
Please help.

Press Up+B+Select on the title screen.