Hello, I am trying to clean install Windows 8.1 on a Lenovo Yoga 2 11 which had a complete disk failure. I purchased and installed a new drive and downloaded the ISO from Microsoft. I downloaded the Multi-OEM/Retail Mk3 from this site, prepared my USB with Rufus and installed Windows. I was never asked for a product key at any time in the process however Windows is not activated. I had used the ei.cfg included with the kit above and I also tried without it. I tried installing 8.0 and 8.1, both Pro and normal. None of them will activate. When I tried setup without ei.cfg I was promped for a product key during install and could not continue. Due to the disk failure, I do not have access to the original recovery partition. I even installed it as a slave in a desktop running Windows 7 and at first it showed up as unformatted but then suddenly vanished from Disk Management completely. Now it won't even spin up so any OEM media retrieval is impossible at this point. Is there anything else I can try? Thanks!