If you are the kind of person who checks event logs, you may run across something that uses these terms — LiveKernelEvent Code: 3000040
I spotted this in the Reliability Monitor. If you search via the Win10 menu, it will come up as “Reliability History.” There is no list of error codes anywhere that I can find as a reference. This particular error was filling up the log, repeating about every minute during any period of activity. Eventually I ran across a mere clue that it was related to the GUI. In my case, the correction was to update the graphics driver, and replace a wireless mouse with a wired one.
On the graphics driver, AMD is downright cruel. The hardware announced itself to Windows as a 15DD. On the system marketing stuff, it’s a Vega 11. If you want to chase down the driver, it’s an RX 580. It’s built into the AMD Ryzen 5 2400G. HP offered a badly broken driver package, so I went straight to the source at AMD and eventually figured out how they identified it.
Regarding the mouse: I have a Seagate back-up external drive plugged into my system at the back. When it was next to the receiver for the wireless keyboard and mouse set, the mouse simply ceased working altogether. So I moved them to different rows and it was just okay. The Seagate USB plug apparently puts out a lot of RF interference. It doesn’t affect the keyboard, but it kept the mouse working poorly. When I switched to a wired mouse, the problem went away.
At any rate, because the mouse is enmeshed in the GUI, this particular error code ceased only when I did both the upgrade and hardware swap.