Windows 10 Unactivating itself

[Lunarex]

In the bottom corner of my screen, there's a popup message that showed up yesterday saying to activate Windows. I've had the computer for over a year now with Windows 10 active but when I go to Settings it says to Activate Windows 10.  I followed the prompts in the photos and then just get the error messages below. I don't know what's wrong because this just suddenly happened. Additionally, my computer says that my Microsoft office license cannot be found and this happened at the same time. 

[Lil_Boy_Blue]

Hi
Use Belarc Advisor for general info and then...

KeyFinderInstaller may help....
https://www.magicaljellybean.com/keyfinder/

Doing research, and none of the methods are mine, I have some, simple single lines of code that will list the same value for your Windows 10 Product Key…
W10 Using cmd.exe as an Administrator (copy and paste accordingly).
wmic path softwarelicensingservice get OA3xOriginalProductKey >> c:\ProdKey.txt
Creates a text file called ProdKey.txt on your C:\ area.

Next is a PowerShell command, as Administrator...
(Get-WmiObject -query ‘select * from SoftwareLicensingService’).OA3xOriginalProductKey

but it will run within W10 using cmd.exe as an Administrator.
powershell (Get-WmiObject -query ‘select * from SoftwareLicensingService’).OA3xOriginalProductKey

https://www.microsoft.com/en-us/software-download/windows10

Establish, preferably print out, all the codes and serial numbers.

As the digital licence is stored on the Main Board I suggest you run diagnostics, after you have made Backups and Recovery Media.   If in doubt please ask.

First:- Turn off the computer, press and hold the PWR button for 4 seconds.

Then - Leave only keyboard and mouse connected, disconnect all externally connected
devices such as Docking Station, USB storage devices, displays, and printers.
Unplug the AC adapter from the computer.

Next - Press and Hold the Power button for 15 seconds to Hard Reset.
Rinse and Repeat

AND/OR - Power on your PC, press Esc (repeatedly), then F2 at the prompt.
Choose System Tests (Fast Test does a 4 minute hardware check).
AND/OR
HOW DO I USE DIAGNOSTICS?

HP PC Hardware Diagnostics Windows is a Windows-based utility that allows you to run diagnostic tests to determine if the computer hardware is functioning properly. The tool runs within the Windows operating system in order to diagnose hardware failures. HP PC Hardware Diagnostics Windows comes pre-installed on new HP computers, but if not on yours, download here:- http://ftp.hp.com/pub/softpaq/sp93001-93500/sp93457.exe