Several small solution U disk poisoning can not be formatted

If the following problem occurs when using U disk:

An exit when non-normal exit U disk, U disk directly pull.
2, U disk poisoning, such as dove gray, auto virus, killing the virus is not complete or virus U disk system file damage.
3, U-joints and internal circuit boards usb flash disk interface loosening (this hardware problem is not solved within this article).

Solving process:

1, inserted before the U disk, press the shift key to die, turn on my computer, directly to the fat cells format usb drive, there is no effect, fail.
2, enter the following command at the DOS format x: fs/fat32, no effect, fail.
3, in safe mode format, formatted disk management under no effect, fail.
4, tried downloading the USB fixes, like MFORMAT, UMSD, the results have no effect, fail.
5, all methods are tried and sent to open U disk. Want to be able to recognize the letter since, prompting you to format, it should not be a hardware problem. Finally, only resorted to trick the U disk volume production refreshed successfully.

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