A while ago, Microsoft introduced the "Fall Creator's Update". For some, this went in as an easy install through the Windows update service, or alternatively through the Windows 10 Upgrade Assistant. For others, it has been nothing short of a nightmare... either system instability or failed installs which may render your computer inoperative.
I have seen first hand, both of the above issues. Regarding system instability, I have numerous Windows stop codes, and Microsoft's response is that it must be a hardware issue. They do not seem to want to admit that their software is not as easy to use as they wish it to be. Instead of taking Microsoft's advice, all of the hardware on the affected system was tested independently. There were no hardware faults to be found.
Since the hardware was all in good working order, the BIOS and drivers were also checked to make sure that the most recent version was in use. They were, and yet the system instability was still present. The same error / stop codes were still present. A repair install of Windows 10 Pro was attempted next, but without any success. Performing a custom reinstall to simply install a clean Windows 10 Pro was the next course of action. This should have worked considering it was just Microsoft software that was being updated without any other software in the way, however it also failed.
After looking into the matter, it was discovered that the custom installs created a series of "Windows.old.xxx" directories, where xxx could be any three digit number. These were the previous versions of Windows 10 that were crashing constantly. Using the normal method to remove those directories (Disk Cleanup), failed. Attempting to remove those directories manually also was impossible as the system had cross linked those files with the current Windows 10 installation. This is what led me to the solution.
Since those files and directories could not be removed, I knew that I would have to format the drive. At first I was apprehensive due to the fact that I did not have the product key as this install of Windows 10 was a free upgrade from Microsoft. After a bit of reading, I found out that I had a digital license and that if I was using the original hardware, without any significant changes, Windows 10 would automatically reactivate. It did with all the previous installation attempts, so I decided to give it a try. My next question was a simple one, why doesn't Microsoft release installation media for Windows 10 that includes the Fall Creator's Update. This would eliminate the need to have to install this update post installation, hence reduce the chances for failure.
I found out that Microsoft does, however it requires a certain condition to work. That condition is that you cannot download the ISO if your browser identifies itself as a Windows based product. What this means is that if you wish to download the ISO that includes the Fall Creator's Update, you need to change the user agent of your browser so that it identifies as anything OTHER than Windows, such as Android/KitKat. Once you do this you can get a link to download the ISO directly from Microsoft. Once you have obtained the installation ISO, and prepared your boot media, you are ready to install.
Booting to the newly created media, I proceeded to format drive C: and install. This time the installation worked, and Fall Creator's Update was already installed; system stability was restored, and everything else worked once again.