Forating of 2 GB micro SD card in card reader slot in acer 4740

Registration date
Wednesday January 9, 2013
Last seen
January 9, 2013

Hello Everybody!
Okay, so I've had this 2GB SanDisk SD Card that I've used for almost a year now. Today I put it in an adapted and stuck it in the MMC/SD Reader for my 2007 Windows ultimate and it said that it had been installed in my computer but I needed to restart it. Well I decided to put it off like other might have done and when I tried to access it on My Computer, a window popped up that said "The disk in Drive G is not formatted. Do you want to format it now?" So I click yes and the format window comes up and I click "Start". By then another window comes up that says "WARNING: Formatting will erase ALL data on this disk. To format the disk, click OK. To quit, click CANCEL". So I click OK and it starts but then ANOTHER window comes up that says "Windows was unable to complete the format".
Any Help?