Why you lost your Windows 10 Product Key

I liked that product keys were transferrable between hardware. With no product key, once the motherboard dies (or I buy the newer, faster CPU and associated motherboard) does my copy of Win 10 go with it?

Hi.. m planning to sell my desktop pc (excluding the Hard Drives and OS)... how do i hold on to the Windows product key...
Should i link it to my Microsoft Outlook Account... before selling the pc??? Will that be sufficient.... or do i need to something else...
Planning to use the Hard drives and OS for my Future Build..
Please advise....

I must be a hacker because I found my product key with produkey-x64 lol

How about the middleware between pc to microsoft, redirect/prevent to validate the original key pc?

i gave my Dell inspiron 15r 5537 to the service centre because it was not booting. he flashed a pirated windows 10 pro. My laptop started but my original windows is gone can i get back my windows key?

hello i want to know why my license is going to expire if i just bought my laptop three months ago, but i accidentally erased the touchpad drivers and the laptop could not start windows anymore unless i allowed windows to repair installation via internet, so then i should still have my windows activated, since windows itself repaired installation, i mean i didn´t re-installed it, i didn´t used a different system image, so in theory, i should still have the product key, but it doesn't appear in the BIOS info tab

"or something fundamental"?

I have a question plz answer...
Windows 10 cheap keys on different website Are they fake or original???

I had a product key on windows 10 rightly scratched off when removing the scratch off cover. Never got a fix for it even though I had the receipt, packaging and disc

Why dont they just send you a 8 digit code on the purchasers phone and activate it with a code whenever they want and deactivate the older codes they create on the fly. With crypto blockchain they still use a single one time key that once lost is gone forever. This product key digital key is antiquated by now.