If Your Phone is showing Problem like

-SD card is damaged. Try reformatting it.

-SD card is blank or has unsupported file system.

-Error Reading SD card

Don't Worry I have a Solution For These Problem---------- ;)

First of all insert your micro sd on card reader and plug in to computer
Then open command prompt by typing cmd on run box
Start>run>cmd
In cmd type chkdsk G: /r  (replace the letter G with your sd drive letter)
It will show the repair %
If the repair completed 100 % the you'r sd is repaired
If not Your Sd can't be repaired