Run CMD.EXE as administrator and type the following command. Note: This set of commands assumes that the USB flash drive is addressed as “disk 1″. Double check that by doing a list of the disks (type “list disk”) before cleaning it).

Diskpart
List disk
select disk 1
clean
create partition primary
select partition 1
active
format fs=fat32 quick (or exFAT )
assign
exit

2. Copy Windows DVD ROM content to the Flash Drive

Type in command to start copying all the content from the Windows DVD to your newly formatted high speed flash drive.
xcopy d:\*.* /s/e/f e:\

3. Setup your computer BIOS to boot from USB Drive

4. Install Windows from flash memory drive