First plug-in your USB stick to your USB port and copy all the content to a safe location in your hard drive.
To open a command prompt, go to the Start menu and search for CMD. Right-click on it and select Run as Administrator to use it with admin rights.
To do so, type in the following command in the command prompt: DISKPART
• Running DISKPART will display the version of DISKPART you are running and the name of your PC.
• Type “list disk” to see a display of all your connected disk drives. Make a note of the number assigned to your Flash drive.
Execute the following list of commands one-by-one. Make sure you replace Disk 1 with the proper Disk number from DISKPART.
select disk 1
create partition primary
select partition 1
format fs=NTFS QUICK