My memory card inside of the phone and computer can not read to how to do ah? ? ? ?

Users questions: Memory card before I have a problem with the time, that is, after every time I use the camera, and then save the picture, and then displays "memory full", was directly shown in the "no memory card", and then I shut down take out the memory card, and then installed in, just fine. . . . . And when I put the memory card into the Reader inside, plugged into the computer inside, the removable disk icon, but when I click on a removable disk when to display "Please insert the disk drive" and the property which shows the available space is 0. But some time to move the reader can open the removable disk. These days I drive a down Videos, followed by either phone or computer can not read all the. . . But I use other people's 1g of the card is inserted inside my phone, but also by ah, my card is 256, how is this going ah? ?
Experts answer: is frequently the case, my 2G, 4G card and have it wrong, another time Card reader to try, there is the card's metal contacts with alcohol wipe a cotton swab to see.
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