After reading on the whirlpool forum - http://forums.whirlpool.net.au/forum-replies-archi... - I have ascertained that you may have to either buy a new card reader, or reboot the phone and reformat the card in your phone.
As you have provided us with such little detail as to what is wrong though, we cannot really help you.
What size is the memory card, what type is it, did you format it, did you use an external card reader, have you gone through the troubleshooting in the Nokia manual, have you looked on the Nokia website - http://www.nokia.com/ - have you looked on the Nokia forums - http://forum.nokia.com/
After answering those kind of questions, then we will be able to help you better :)
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After reading on the whirlpool forum - http://forums.whirlpool.net.au/forum-replies-archi... - I have ascertained that you may have to either buy a new card reader, or reboot the phone and reformat the card in your phone.
As you have provided us with such little detail as to what is wrong though, we cannot really help you.
What size is the memory card, what type is it, did you format it, did you use an external card reader, have you gone through the troubleshooting in the Nokia manual, have you looked on the Nokia website - http://www.nokia.com/ - have you looked on the Nokia forums - http://forum.nokia.com/
After answering those kind of questions, then we will be able to help you better :)
Dale.