How to install Windows 7 when there is no USB inbox driver support? Please follow the steps below: Prepare an USB flash drive and go to Microsoft official web site to build a Windows 7 USB installation disk. Click here to download Windows USB Installation Tool. Unzip the file and execute WindowsImageTool. Make sure Windows 7 USB installation disk is plugged in. Select [None-Add USB drivers] in Source Path. Choose Windows 7 USB installation disk in Destination Path. Click [Start] to run and [Close] when the procedure is done. Insert the Windows 7 USB flash drive to the computer you intend to install Windows 7. Turn on the computer and press [F12] during POST to enter boot menu. Select the Windows 7 USB flash drive to start installation procedure.