How to recover non working microSD card

[gggopi]

Hello,i have a transcand 4gb micro sd card , it is not working.it shows u have to format the disk , but it not formatted . how to format that disk and recover it.

 

[ksiemb]

Hello,i have a transcand 4gb micro sd card , it is not working.it shows u have to format the disk , but it not formatted . how to format that disk and recover it.

You have files on it already ?
Are you saying you try to format it, but it won't format ?
explain more clearly your issue.