I am not sure what you mean.
Can you not do a system image of your windows 7 setup, then if Windows 10 is not for you, you can restore 7 from the image.
There is a free bit of software to make images called Macrium reflect,
, I have never used it myself as i use Aconis, but I have heard it is very good.
Desktop machine now powered by windows 8 pro 64bit, no dreaded metro and Linux , laptop by Linux