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Is it possible to do a fresh install? I only have a hard drive and windows 7 ISO file.

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Got a USB port? Can you boot off of it? Have a 4GB flash drive handy? How about a system you can prepare the flash drive on with .NET Framework 2.0 or higher? If so, you probably want the Windows 7 USB/DVD Download Tool. You might find this tutorial handy.

Update: Fixed links.

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Assuming you have a host PC running Windows 7 or Vista you can make the USB key bootable using DISKPART. I wrote up some fairly detailed instructions on my website to install Windows 7 on an Acer Revo.

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If your PC is post 2000, you can boot from a USB flash drive (you may have to set boot order in the BIOS).

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  • just copy all files from the ISO? will that work?
    – user36243
    May 6, 2010 at 0:24
  • @LaRs: you will need to do more than copy it all to the USB. See other answers.
    – BCS
    Jul 19, 2010 at 1:34
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Yes you can. I did the same thing a couple of weeks back. You don't need any flash drives or any other and is just sufficient with what you have(iso file & hard drive). Just extract the 'iso' file into a folder and run the 'setup' file. After running, you'll get a few windows asking on which drive to install, which would look familiar if you had installed any OS earlier. Assuming that you have installed your your current OS in C:\ , select the same. It may restart couple of times during the process. Done! Finally the earlier version of your OS will be in 'C:\Old Files', which you can 'shift delete' it. And post installation, you can use the same Windows Vista Drivers for Windows 7.

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    this will only work if you have already any windows version installed. It will not work if you want a fresh installation.
    – kaykay
    Apr 16, 2011 at 4:22

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