MY B GB MICROSDHC FLASH MEMORY CARD MEDIA CURRUPTED

Dear sir,

my B GB MICROSDHC FLASH MEMORY CARD is currepted only show the volume but i can not open it.

please help me my card is under warrentee.
 please give me suggesion.

                                                      thanks

                                                   sujeet kumar

                                                   9717245709

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