To create bootable flash drive from ISO image:
Steps
1. Download and install power iso.
2. Open power iso.
3. Click on tools and then create bootable USB drive.
4. It may ask run as admin. then make it run as admin.
5. Now browse source image file.
6. Select destination USB drive and then click start.
7. Done. your bootable USB is ready for installing an operating system from bootable USB.
Note: flash drive must be of 4GB or more
For further information, see here.
