1. First in the computer, check whether there is a problem with the u disk.
2. Then right-click the USB flash drive and click the \"Properties\" button to see if it is FAT32 system, if not, it needs to be formatted into FAT32 system.
3. Right-click the USB flash drive and click the \"Format\" button.
4. In the \"File System\
5. Wait for the format to complete, finally click the \"OK\" button, and re-store the data on it.