Zalkard :
I'm sure this has been asked many, many times but I'm receiving my new hardware tomorrow and am planning to put a clean install of windows 10 on it. My current PC is running windows 8.1 and I am able to upgrade to 10 right now but I have not yet upgraded my PC to windows 10 yet since getting the option to upgrade. So in short, I'm wondering if I can use my windows 8.1 license key on a clean install of windows 10 after upgrading the hardware on it, or that I'd have to install windows 8.1 onto it first and then upgrading to windows 10.
Thanks!
From MY experience during the changes they did to this very same issue when W10 was first released to now is; your BEST answer is " install windows 8.1 onto it first and then upgrading to windows 10." IF and ONLY IF this is a store bought copy of W8.1 NOT a copy that came with your Dell/HP/etc. (aka OEM edition). OEM licensing is tied ONLY to the original hardware it was sold with PERIOD. There is no way around it, if you change (you didn't specify what the "new hardware" is) the CPU, Motherboard, and sometime the PSU/Case itself it detects the hardware as 'different' and says WAIT that isn't right! And then tells you your copy of Windows isn't valid, won't repair, won't reinstall, etc.
If your good, then install W8.1 first, just get a wired connection to your Internet first, download all the patches and updates to make it 'qualified' when W10 pops up and do the install. Honestly, unless your changing the hardware that much (as I pointed out) is the only time for a clean install, I wouldn't bother otherwise (again based on WHAT is the new hardware) and just do the upgrade now and install the new hardware afterwards (i.e. new Soundcard, new Video card, etc.).