Yesterday i bought a acer switch 10 and i want to install a clean copy of windows 8.1 to it. There is a product key in the UEFI bios and windows should take the key from it but i tried to install Pro and Core editions of windows 8.1 and none of them are picking up the product key. It came with a Windows 8.1 with bing, is it the same as Windows 8.1 Core? So is there any way to install a clean windows? or i am stuck with the one acer gave me?
I have the same issue with my new Dell laptop which has "Windows 8.1 with Bing" installed on it.
This version of "Windows 8.1 with Bing" is different than the standard Windows 8.1 or Pro. So your key will not work with either using those ISO images. As far as I have discovered, Microsoft does not offer an ISO of "Windows for Bing" for direct download. So you are going to be forced to purchase the physical Windows OS recovery media directly from Acer.
Dell: (for people with the same issue with a Dell computer) https://www.dell.com/support/home/us/en/04/media