Nếu bạn có file iso rồi thì dùng Windows 7 usb dvd tool nhé:
You must be registered for see links
TO MAKE A COPY OF YOUR WINDOWS 7 ISO FILE:
Click the Windows START button, and click WINDOWS 7 USB/DVD DOWNLOAD TOOL in the ALL PROGRAMS list to open the Windows 7 USB/DVD Download Tool.
In the SOURCE FILE box, type the name and path of your Windows 7 ISO file, or click BROWSE and select the file from the OPEN dialog box. Click NEXT.
Select USB DEVICE to create a copy on a USB flash drive or select DVD disk to create a copy on a DVD disk.
If you are copying the file to a USB flash drive, select your USB device in the drop-down list and click BEGIN COPYING. If you are copying the file up to a DVD, click BEGIN BURNING.
When your Windows 7 ISO file is copied onto your chosen media, càiWindows 7 by moving to the root folder of your DVD or USB flash drive, and then double-click Setup.exe.