Run CMD.EXE as administrator

Type following commands and hit ENTER key after each command.

DISKPART	 		- starts the DiskPart program
LIST DISK	 		- shows numeral assigned to disks
		 		  note the numeral assigned to your usb stick
				  The numeral 2 will be used in this example
SELECT DISK 2
DETAIL DISK 	 		- the info shown will confirm the correctness of your selection
CLEAN ALL 			- the entire disk/stick will be overwritten with zeros
				  This can take a while depending on capacity.
				  Keep the faith - the DiskPart prompt will eventually return.
				  !Alternatively, just use "CLEAN" to do a quick run (first/last 1MB)!
CREATE PARTITION PRIMARY 	- create a primary partition on the USB stick
FORMAT FS=NTFS (or FS=FAT32)	- format the partition
ACTIVE 				- the partition can contain operating system startup files
ASSIGN 				- the next available letter is assigned to the USB stick
EXIT 				- exit from the DISKPART program
EXIT 				- exit from the command prompt