Success!!!
My media was of course the problem (phew), windows installed just fine
(multiboot).
How I solved this kind of problem you wonder,
http://wintoflash.com/home/en/, I used this freeware on windows, (it comes with spam software, bars and advertisements) they deserve a donation!
Unetbootin, winusb etc. did'nt do it, and so many other programs I tried, I am indeed impressed with this software, very different approach, they only needed the windows files and not necessarily the image, works with scratched media, lol...
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