Windows for old hard drive in new pc.

[jeremyek]

I recently built a gaming pc and decided to pull a hard drive out of my old pc and use it in this build.
What I need to know is what OS do i use? I see "Windows for refurbished pc" and "Windows for new pc" and I dont know which I use.

 

[Ambular]

I think either one would work, as long as it's a legitimate copy with a legitimate license key.

 

[SuperSoph_WD]

Hey there, Jeremy!

Since the PC build is brand new with a new motherboard (I suppose) you need to buy a new genuine Windows installation. This is something that requires you to get in touch with MS Support for further assistance. Either way, just like @Ambular mentioned you will need a legitimate copy with a legitimate license key.
The operating system communicates with the motherboard. The HDD is just a carrier for the system files, you won't be able to boot into the OS that is on the drive from another PC.

Good luck!
SuperSoph_WD