Upgrade from Vista with Assitive technology free upgrade:
These are the official minimum system requirements to run Windows 10:
Processor: 1GHz or faster processor or SoC.
Memory: 1GB for 32-bit OS or 2GB for 64-bit OS.
Storage: 16GB for 32-bit OS 20GB for 64-bit OS.
Graphics card: DirectX 9 or later with WDDM 1.0 driver.
Display: 800 x 600.
You have to have already installed Vista. Get it from here:
Only place I could find. Most reviewers are okay with the site, a few have qualms. Should be okay because you are loading it into a blank machine anyway. Might install/run SuperAntiSpyware after upgrading to Win10.
http://softlay.net/operating-system/windows-vista-business-download-iso.html
Here’s the link to get an ‘accessibility’ upgrade for Microsoft. Good from Vista on but need to have OS already installed.
https://www.microsoft.com/en-au/accessibility/windows10upgrade