Hi,
I am also facing the same problem, I bought a Sandisk 32gb Micro SDHC card with class 4. it was working good till one month.but now It is not detected by my android phone.So I tried with card reader result is same.Then I try to connect it through a USB card adopter to my PC. It asks for Formatting the removable disk.When I try to format it in basic FAT,NTFS or exFAT it shows only 30.6 mb capacity and a prompt message “Windows was unable to complete format”.
Please Help!
