Windows 10: New license key while switching pc

I am planning to build my own computer and I am using a HP Windows 11 Desktop. Will I need to buy a new windows license when I do eventually build my new one?

:)

 

PC Key Power Switch

Hey! I'm how do I make a PC key power switch? This is the keylock I'm going to use: http://www.biltema.com/no/Bil---MC/Bil-tilbehor/Bilelektrisk/Strombryter/Tenningslas-43076/
It has:

• Universal threepositioning ignitionlock. Has following functions: off, ignition and start (rebounding/momentary).
• Delivers with 2 keys.
• Screw-connection.
• Mountinghole: 25 mm.

So I want it to be exactly like this: You turn it on like a normal car. You twist the key to a certain point, and it springs back. Like in the video
The normal power button should not be involved. You just turn the key to start and stop. And I was wondering, in this situation the way I want this, it is possible to take the key out without turning the power off and do you turn it off by twisting it in the same direction again?

 

Cannot transfer Windows license to new PC

I will reiterate:

• On my old PC I had Windows 10 Pro. I bought a digital license for it 3 years ago from the Microsoft store. In the Activation page it clearly says: "Windows is activated with a digital license linked to your Microsoft account". When I run "slmgr /dlv" from an admin cmd, it clearly says that it's a retail key, not OEM.
  
• I did a fresh install of Windows 10 Pro on my new PC. When I try going through "Activation > Troubleshoot > I changed hardware on this device recently", my new PC does not show up there. Only my old PC shows up. However it listed on my Microsoft account in the web. So I'm 100% logged in with the same Microsoft account on both devices.
  
• I did a fresh install of Windows 10 Home of my old PC, hoping it would unlink the license from the old PC. It did not.
  

So now using your suggestions: on my old PC, I entered the default Pro key. It upgraded successfully and automatically pulled my old retail key. I'm back at the start.

Also, I would very much like to contact the official customer support, but they don't provide one for my country (Serbia). I cannot enter my phone number and wait to be called.

 

Cannot transfer Windows license to new PC

Yes, thank you, these are the relevant steps. I only want to point out one thing, since the instructions are a bit misleading.

Once you get to step 5 and see a list of devices linked to your Microsoft account, you need to select your old device from the list. So open the Activation page from the new device and select the old device in the list and mark it as This is the device I’m using right now.

My initial understanding was that you need to find your new device in the list and mark it as the currently active one. What you're actually doing is selecting the device from which to take the Windows license.

I have now successfully transferred my Windows license to my new device.

Thank you