- Start PowerISO (v5.2 or newer version, download here).
- Insert the USB drive you intend to boot from.
- Choose the menu “Tools > Create Bootable USB Drive”. The “Create Bootable USB Drive” Dialogs will popup. If you are using Windows Vista or Windows 7 operating system, you need confirm the UAC dialog to continue.
- In “Crate Bootable USB Drive” Dialog, Click “...” button to open the .iso file of Windows 7.
- Select the correct USB drive from the “Destination USB Drive” list if multiple USB drivers are connected to the computer.
- Choose the proper writing method. “USB-HDD” is recommended.
- Click “Start” button to start creating Windows 7 Bootable USB Drive.
Step 2: Configuring the BIOS:
You should now reboot and go into the BIOS configuration to boot from USB. Instructions for doing so wildly from system to system, but generally entail the following:
- Reboot the system.
- While booting (before Windows starts loading), get into the BIOS configuration screen by hitting something like F1, F2, F6, F10, Delete or Escape. Hotkey instructions are generally provided on the screen.
- Go to the section that contains your boot deices.
- 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 form USB drive:
Assuming that you properly configured your BIOS and your USB drive supports booting; Windows 7 setup should now load. Depending on the speed of your USB drive, this may take a while.
If it isn’t working, then double-check the following before making a scene:
- Is your BIOS properly configured for booting from the USB device? (Is the USB device listed and does is have top priority?)
- Have you correctly prepared the USB drive in step one? (Restart the procedure.)
- Does your USB drive properly support being booted from? (Try another one!)