Ans. When it comes to product key Microsoft is very insecure about it as it can be seen by hackers and can be neglected by humans. But don’t worry there are basically 3 places where this key can be hidden the only thing you need to do is to have access to the disk drive of a computer.
The key can be saved or stored in software itself as when you complete the installation process for Windows then sometimes it saves the key in the registry of the computer. Which is a tough process you need to be very careful in grabbing the key from the operating system as the data might be erased if you format your hard drive.
One of the easy findings is this, sometimes when a computer consists of technology which is System Locked Pre-installation (SLP) then it is very common that the main key will be present on the COA Sticker or on the power supply of the computer. It was very common in windows 7 computers.
Well in some computers that consists of windows 8 and 10 may find that they key is stored in the computer’s UEFI firmware but the best part it’s you no longer require to know the key as now the process will take place automatically and the computer will enter the key for you without issue.