Sure.
CPU: i7 6700k @ 4.0 GHz(from first build)
Mobo: Asus H270I Mini ITX (new)
RAM: Corsair Vengeance LPX 16 GB (2 x 8 GB) 2400 speed w/ CL 14(new) [or] Crucial 16 GB (2 x 8 GB) 2133 speed w/ CL 15 (from first build)
SSD: Samsung 850 EVO 250GB (from first build)
GPU: Asus ROG STRIX 1060 6 GB (from first build)
PSU: Corsair SF - 600 W 80+ Gold SFX
Chassis: Silverstone ML08B-H Mini ITX
OS: Windows 10 Home
About the parts registering to the OS, I don't actually remember where I heard of it, probably a friend trying to trick me. Dumb question, sorry. I think what I meant was more along the lines of is it possible to mix parts and have it work like a new build (excluding age of parts and things), and do I have to buy Windows 10 again or but that gets saved on the SSD doesn't it?
Thanks!