I used Rufus 2.7 according to qubes installation doc to create a USB install drive.
I tried to dd from cygwin to a USB drive. The USB was not readable, even from cygwin although windows indicated it was bootable, and unsurprisingly it did not boot.
I will try using a ubuntu liveCD.
https://groups.google.com/forum/#!topic/qubes-users/t2h-O4b-K1Q
I think the problem with graphic card support, while I got the error about it.
Do you dried verbose mode and look at messages at your console or log?
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p.s. I does not know why developers of Qubes focus on new features and Windows 10 support, when tons of users can not use the system and install it on there machines at all!
I does not know why somebody want to install spyware by Windows called Windows 10 on Qubes. But it's not primary task! I'm totaly sure about that.
Yes, I want to have Windows installation on Qubes to easy migrate to Qubes for Windows 7. But I can use HWM Windows 7. Or maximum Windows 7 tools! It's enought for totay.
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I want windows 10 only to use windows 10 only programs, its really the only reason. wine just never works for me. and windows 10 not 7 only cause windows 7 is eol in 3 years for security updates, and if i want to go online i need a key and most likely i won't be able to get 7 anymore from a reputable dealer unless I get it preinstalled and I just want a key.
windows 10 might not keep you safe from microsoft and their friends though lol. But they can be made pretty secure against everyone else. and i have to say even from themseleves with their own tools still. its still all about what the user does nowadays I guess, even though its really less true to a certain degree. But really does come out when using qubes. The "opsec" still matters greatly and they are purposefully unmasking about it. I mean qubes developers really try to not give you a false sense of security lol. So it is what it is no matter what you are using really.