changed motherboard and cpu do i have to reinstall windows?

l0t3k

Distinguished
Oct 16, 2012
48
0
18,530
For the most part the thread title says it all. I just re-installed my 3570k and asrock z77 extreme 4 after trying out an AMD build. I installed Windows 8.1 on the AMD build and after putting back my intel and old mobo windows still loads up. Is it necessary to reinstall windows or did everything migrate over ok?