hello i am having some important datas in my usb card 2gb and when i insert it in pc and try to open it it says that usb needs to be formatted and when i click on format then it says cannot be formatted. please someone tell me whats going on. appreciated for any help.
That will happen, if you don't stop service to that device properly, when up in Windows. If you pull the card out before going through the removing device procedure, you can lose your data and/or damaging the device. Looks like that happened to you.