Sandisk 32gb class6 MicroSD stopped working, cannot be detected, cannot format....

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http://androidforums.com – My case involves a Sandisk 32gb class 6 MicroSD card. Initially my S3 says that I have a blank card, but later it can detect the card again. For a few days this keeps on happening, on and off. Until the S3 continuously says the card is blank for a whole day. I took out the card, then it worked again....but after a few minutes, the S3 says the card's blank again...and again...until the microsd card is undetectable. I took it out and plugged it into my PC using the Sandisk MicroSD adapter, but the PC cannot detect it. I tried the plug it into at least 4 different laptops and PCs but it still (General)