USB flash drives do not always break physically; most failures are software-based. You should consider downloading the Alcor Recovery Tool if your flash drive exhibits any of the following symptoms:

We have all been there. You plug your USB flash drive into your computer, and instead of seeing the familiar auto-play dialog, you get nothing. Or worse—Windows asks you to format the disk, shows "0 bytes" of capacity, or simply refuses to recognize the device.

The flash drive is , and no software or registry hack can turn it off.

Useful tool to recover real usb flash memory. Removes fake flash memory(virtual). ALCOR Usb Flash Memory Recover Tool | PDF - Scribd