Windows 10: Win10 pro digital product key installed in my refurbished pc is indicating that it needs to...

I bought a refurbished HP pc from FRY's Electronic about 10 yrs ago with Win-10 pro. Product key installed by the refurbisher was digital. Now, my pc is indicating that I need to re-activate the Win-10 pro and I do not know exactly where to locate the digital product key used by the refurbisher. When I logged into my Microsoft account under the devices tab, it indicates that the pc was originally installed with Win-10 pro. But how or where do I locate the digital copy of the Win-10 pro product key used by the refurbisher? The only Windows activation tag attached to the pc is a windows 7 pro be

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Win10 home digital license to win 10 pro with product key

Bought a refurbished tablet with a "windows 10 pro for refurb pcs" sticker on it which has the product key.

Tablet shipped with fresh win 10 home install, first thing that pops up on startup is the language screen, ie it's the first screen of a fresh install. It appears to have a digital license on it.

Tried changing the product key to the sticker key after getting through the initial setup, and get a 0xc004f050 error.

How do I change to win 10 pro using the product key?

 

Win10 Home to W10 Pro Upgrade Error using Product Key

The keys are there because 1. It is the product key you end up with when you gain a digital license for Windows 10 Pro through legitimate means and 2. When you do a clean install of Windows 10 (without adding an ei.cfg file), on a computer with a product key for Windows 10 Home stored in UEFI, you can use the generic product key to upgrade the Windows 10 Home that installs by default to Windows 10 Pro - but only if you have an existing digital license for that computer for Windows 10 Pro previously stored on Microsoft Activation Servers.

The reason the generic Windows10 Pro product key will not upgrade your Windows 10 Home to Pro is because you do not have a preexisting digital license for Pro for that computer stored on Microsoft activation servers.

 

Should I Replace Windows 10 Pro Product Key on working Dell PC

Last year I purchased a refurbished Dell Latitude E6430s with Win10 Pro pre-installed. Shortly thereafter I completed a Clean Install of Win10 Pro to remove bloatware. System worked well for months, until I visited Windows Update & Security in Settings and happened to notice that my Win10 Pro was not activated. I contacted the PC supplier who advised me that the Product Key for this PC was located on a tag at the bottom of the PC.

Regardless, I rebooted and somehow Win10 Pro activated itself using a link to my Microsoft Account.

System is working well, but...should I change the Product Key now to the one supplied with this PC? Will it cause any problems?

Appreciate any advise.
Thank you