Ds doesn't recognise games
First, you need to make sure that, if the system is a DS or DS Lite, that the system is off when you insert it. If it was, or if you system is a DSi or DSi XL, then you might try blowing on the card and in the card slot or, better still, use a cleaning kit on the contacts to clear them of any contaminants. If this still doesn't solve your problem, then you may need to contact the Nintendo Customer Service Department at 1-800-255-3700 to send it in for repairs.
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