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Replaced Motherboard, Now I See “Missing Operating System” What To Do?

Which implies that I even have the 64-bit Windows working system put in on a 64-bit CPU. As you presumably can see in the picture above, it says “64-bit Operating System, x64-based processor”. One factor to remember is that a 64-bit processor can assist either a 32-bit or a 64-bit OS but a 32-bit processor can solely run a 32-bit OS. With these three steps, you now know how to upgrade motherboard and CPU with out reinstalling Windows 10, and tips on how to reactivate the OS as well.