I've been asked to look into any computers which do not support Windows 8.1. The goal is to either avoid windows 10 or ensure that compatibility exists with old software. I don't think there are many computers that will outright not support windows 8, but with how Microsoft has been pushing hard to get everyone onto Windows 10 I wouldn't be surprised if there were more than a few computers which do not run on prior Windows installations. The only ones I know of right now are the Surface Pro 4 and Surface Book, which according to Microsoft will not run any form of Windows 8 or 8.1. Are there any others? Just for the record, it's not an issue if we have to buy win10 machines and then buy new win8 disks. I just need to make sure that the software is supported.