How to Setup Windows 7 or 8 from USB drive

Step 1: Create Bootable USB Drive

• Start PowerISO

• Insert the USB drive you intend to boot from.

• Choose the menu "Tools ► Create Bootable USB Drive". A dialog will popup.

• In dialog, click "..." button to open the iso file of Windows 7 or Windows 8.

• Select the correct USB drive from the "Destination USB Drive" list.

• Choose the proper writing method. "USB-HDD" is recommended.

• Click "Start" button to start creating windows 7 or 8 bootable USB drive.

Step 2: Configuring the BIOS

• You should now reboot and go into the BIOS configuration to boot from USB.

• While booting (before Windows starts loading), get into the BIOS configuration screen by hitting something like F1, F2, Delete or Escape. Hotkey instructions are generally provided on the screen.

• Go to the section that contains your boot devices.

• With your USB drive plugged in, the USB drive should be listed. If it isn’t, your system might not support booting from USB. Assuming that it is supported (as is the case with virtually all modern hardware), promote your USB drive to the primary boot device.

• Exit from the BIOS configuration, saving all changes.

Step 3: Booting and setup windows 7 / Windows 8 from USB drive

• Assuming that you properly configured your BIOS and your USB drive supports booting, Windows 7 or 8 setup should now load. Depending on the speed of your USB drive, this may take a while.

Alternatively you could also use RUFUS to setup Windows 7 or 8 from a USB drive.

Once your OS is installed, it'd be a good idea to go through the settings. Here is a Guide of what can be setup.