Here is the proper way to reformat a USB drive in Windows.

Step 1: Locate your File Explorer icon. It's usually on your taskbar at the bottom of your screen. 

Step 2: In the window that pops up, locate your USB drive that you'd like to format. Mine is pictured here:

Step 3: Right-click your USB drive and click on 'Format".

Step 4: In the new window that pops up, it should look something like what's pictured below. A good rule of thumb is to leave everything at it's default, meaning you shouldn't have to change anything. If you'd like to change some things, here's a brief explanation on each option:

     A. This is the capacity of your USB drive. You shouldn't ever have to change this.

     B. This is your File System. This dictates what computers and devices your USB drive will be compatible with. NTFS is good for use on only Windows machines and FAT32 is good for a wide variety of different work environments. You'll want to select FAT32 if it hasn't be selected already.

     C. Allocation unit size should always be set to default allocation size.

     D. The Volume Label box allows you to give your USB drive a custom name to whatever your choosing.

     E. Make sure you tick the Quick Format box for a speedy format!

     F. And when you're all done, simply click 'Start'.

Step 5: One more new window will appear asking if you're sure if you want to format your USB. Please note: formatting a USB drive will erase all the data that was previously on it! So make sure you don't have anything on there you don't mind losing!

Step 6: After a few moments, you should be greeted with this! And that's it! You've successfully formatted a USB in Windows!