1. Get a USB Flash drive formatted with FAT32, it has to be AT LEAST 4GB!
2. Download and install the Windows 7 USB/DVD Download tool from Microsoft Store HERE or Codeplex HERE (It is an official Microsoft tool, totally wierdly named from the Windows 7 release but still very much valid!)
3. Download or locate a ‘Windows 8.1′ .iso file and store it locally on your harddrive.
4. Start the Windows 7 USB/DVD Download tool (from startbutton or ‘windows 8 style startmenu’?)
5. Complete the steps 1-4
6. Insert the USB flash drive into the powered off PC to install, Power on and boot from USB drive (F9 at HP logo on HP Machines).
7. Install Windows as you would normally.
1. USB Flash Drive
Prepare a USB flash drive for installation, is has to be at least 4 GB in size and it has to be formatted with FAT32. It does not have to be erased, the tool will do that for you if needed.
2. Download and install the Windows 7 USB/DVD Download tool from Microsoft Store or Codeplex. The Links are as follows:
Run the .exe file, you will have to be a local administrator on your machine for it to install properly.
3. Locate a Windows 8.1 .iso file. This file should be placed on a local harddrive. It does not matter where you put it, as long as it is on a local HD and it is accessable to you when running the tool, meaning that you have access to where the file is stored in the filesystem.
4. After the installation of the tool has completed, you will suddenly notice this tile:
You can also just use the search function, in ‘metro mode’ simply type Windows 7 and you will see it and its uninstall app.
Start the tool
Click Ok at the User Account Control popup dialog
The first screen should now look like this:
5. Hit the Browse button to locate your Windows 8.1 installation iso file.
In my test, I’m using an .iso file downloaded from TechNet Subscriber downloads (soon to be no more)
It does not have to be from TechNet, it can be MSDN or Volume Licensing or really any form of Windows 8.1 installation iso.
Click on ‘USB device’
If you see the window below, that means that the USB drive is either not plugged in properly, or it has the wrong formatting or insufficient storage or similar. Make sure that you have a USB flash drive that meets: 4GB minimum+FAT32.
Insert a USB drive that meets the requirements and press the refresh button
Now, click on the ‘Begin copying’ button.
If the USB drive was ok, the copying will begin, but if not, if it still had files still on it, you will see this dialog:
Click Erase to continue
Click Yes and the formatting and copying process will begin.
Let it do its thing until it reaches 100%
When it has finished formatting and copying files, you are done.
6. Next step, is to insert the USB drive into the PC you want to install Windows 8.1 on, Power it off completely and Power on again.
Use BIOS settings to select ‘boot from USB’ or like on a HP machine, hit F9 at tghe HP logo screen to boot directly from USB.
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