Question about upgrading windows 10 home to pro in prebuilt laptop

[Gautham_Vignesh]

Hello,

I have this pre-built laptop which comes with windows 10 home already installed in it during time of purchase. I wanted to actually upgrade to pro version.

I couldn't able to locate the existing product keys since these are manufacturer installed ones. When I upgrade to pro from Microsoft Store - will I be given a new product key ?

Another question - Say that I wanted to re-install windows on my pre-built laptop, how could someone get it done without knowing a product key ?

[#2]

Hi @Gautham_Vignesh 

You need to buy a new key for Windows 10 Pro and need to upgrade your existing Windows 10 Home. 

• Press Win + I to launch the Settings, then go to the below location:
  Update & Security > Activation > Change product key
• Add Windows 10 Pro or Home Key, click Next, and then Activate.
• Restart the computer.

[#3]

There is a small utility that you can use to backup your installed Windows Key:
https://www.nirsoft.net/utils/product_cd_key_viewer.html