1. The reason why the USB flash drive cannot be returned is that some files on the USB flash drive are occupied. 2. When the computer is turned off, the occupation can be removed. 3. To query which files will be occupied when they are opened, just end the process. 4. It is recommended to kill virus, and it does not rule out the existence of virus.
It may be a computer virus. Generally, when you exit the USB disk, you should be able to exit safely as long as you are not using the USB disk file. If a virus is operating on the USB disk, it will cause you to be unable to exit. Kill the virus as soon as possible. Generally, the USB disk stores important files. If the virus is active, you may need to use data recovery software to recover data. So, kill the virus now
If none of the above methods works, I will use my ultimate method: disable or uninstall the storage volume and disk drive of the USB flash drive in the Device Manager, so that the system can stop all reading and writing operations to it, and then it can be safely unplugged.This method is omnipotent.original.
It is estimated that the USB stick is broken, otherwise it is generally OK. Try plugging it into another machine.If this is still the case, your USB stick must be broken, If so, your machine may be infected with a virus~~~
