How do I set up the keyiso service windows 7 and make a bootable USB on a Mac?

Recently I was facing the same problem. You can easily install OS in your PC by the help of the USB drive. You have to just follow the following steps: 1. First of all take your flash drive and insert it in your USB drive of computer. 2. Press F2 for entering in the BIOS setting. 3. Change the BIOS setting by doing the booting device to the external USB drive. 4. After that, click on the continue button. 5. Within some minute setup will start checking the flash drive. 6. A new tab will open with the message checking for your OS files it will take some time. 7. Now the installation process will start. 8. Your computer will restart for the several times while the installation process automatically. 9. When the whole procedure will complete you have to just install the hardware driver. Now your OS is ready to use.