[Solved?] Quitting game caused second monitor to shut off (public test)

[Byzanoid]

Pressing Quit on the Valheim main menu, and the game shutting off, made my second monitor shut off and become undetectable by my system. It is continuing to act strangely.
I have replicated the occurrence after clicking Quit on the Valheim main menu - when I can actually get my computer to recognize the monitor again. It also does the same thing when I start GeForce Experience (to see about updating drivers).

Things I have done to narrow down what could be happening:
Unplugged and replugged all cords to second monitor.
Switched cords and adapters(HDMI to DisplayPort) and which port in my graphics card it is plugged in around to confirm it is neither the cords, adapter's, or port's fault.
Updated to most recent available Nvidia Graphics Driver
Updated windows
Full shut-down and manual start computer several times
When computer is booting up, it uses the secondary screen to display the ASRock logo (my motherboard) as it always has, but it is displayed at a lower resolution than usual (appearing bigger).
After boot up, computer displays log in screen on the other monitor as it always does, but secondary monitor then shows 'cable not connected' after it just proved it was connected by displaying the boot-up screen.
Second Monitor disconnection is replicate-able by starting Valheim (in both normal and Vulkan mode), and clicking Quit on the main menu.
Second Monitor Disconnects when starting Nvidia GeForce Experience.
(This probably isn't all, and I'm going to keep testing, but I think it's enough for now to give an idea of what's going on.)

I'm posting this here because:
1. This first occurred when hitting Quit on the Valheim main menu, and was not occurring before this.
2. This is not the first time Valheim has been involved with something going wrong with my computer. In fact, it's the only thing that ever has been involved with serious malfunctions going on with my computer.
Previously, running Valheim caused my Nvidia RTX3080's Vram chip to cook and resulted in GPU crashes and eventually death of my GPU. Another cause of this I heard about was Nvidia supposedly didn't use very good thermal paste on the V-ram chip in this particular GPU's production, resulting in many others' GPUs burning out as well.
I had to get a replacement.

I can not prove Valheim caused either incident, but the fact I was running(or Quitting) it when the malfunctions occurred, not once but Twice now, is becoming very suspicious to me. No other game or software has caused me this much trouble.

What the heck is going on with my computer (and Valheim's role in this), and if anyone has some insight into what my current computer malfunction is, how might I go about fixing it?

[Solved?] Edit:
After messing around with this a lot, it seems to have been solved with downloading and installing the current GPU Driver directly from the Nvidia website. I chose the non-Geforce Experience option, and it seemed to remove a lot of old stuff - including Geforce Experience itself.
Now all replicate-able second monitor failure triggers seem to not cause the issue anymore.
Either it was Geforce Experience program itself, or the old stuff the driver installer removed.