Unable to identify U disk in Win7 system the cause of failure and the countermeasures to make the startup disk

Reason 1, u disk may be occupied or by the third party software occupation, the U disk is occupied will cause the disk to make the disk production tool failed, or U disk Startup Disk production tools do not recognize it, and the computer does show the existence of a U disk;

Solution: First hold down the Ctrl+alt+del combination shortcut key to open Task Manager, and then find some non-system process, the right mouse button query file location, if there is a path for u disk, you can right-click to select the end of the task, lifting the U disk occupation problem, restore the disk launch Disk production tool identification.

Reason 2, USB drive damage caused USB plug into the USB interface, when good time is bad, sometimes in the lower right corner of the "Unrecognized USB device" words, the same open U disk boot Disk production tool will be identified fault.

Solution: First open the computer interface → right key properties → Device Manager, in the Open Device Manager interface, uninstalling all USB connections on a Universal Serial bus controller, and then using a driver tool such as a Driver wizard software reinstall can solve the problem of USB unrecognized and the creation of the U Disk Starter tool failed.