First post, so please bear with me; I'm going to dump as much information as I can in hopes of FINALLY finding a cause / solution to this crap...
I have a stock Asus G20AJ gaming machine, with specs as follows:
Processor: Intel Core I7-4790 @ 3.60 Ghz
RAM: 16 GB
OS: Windows 10 Home 64 bit (recently upgraded from Windows 8 - more info below)
Graphics Card: GeForce GTX 760
Monitor: HP 2311x
For the last year, my computer has been bricked because Windows crapped out on me when I was trying to upgrade from 8 to 10. It was inoperable. Yesterday, a neighbor agreed to help me get it fixed and did a clean install of Windows 10. We completely wiped the computer and did a fresh install of the OS. It's working perfectly. I've gone in and downloaded / installed all the latest drivers for everything. The only software currently installed on my computer are whatever comes with Windows, Avast Antivirus, Origin (for Sims 3 games, but they're not downloaded / installed yet), Steam, and Civilization 6.
While playing Civilization 6 (and I seem to remember it happening when I was playing the Sims 3 way back when, before Windows died), my monitor will go black and a white window will flash on the screen which says, "Input Signal Out of Range - Change settings to 1920x1080 60 Hz." (Note that this is currently my resolution and refresh rate setting). For a few minutes while that is flashing on and off my screen, I can still hear the sound of the game running on the computer; then, the sound will freeze and the computer will restart.
Sometimes this happens after only a few minutes of playing the game, and sometimes it won't happen for several hours. But it ALWAYS happens. At first I thought it was some kind of Windows glitch, but the first time I cranked up Civ after the clean Windows 10 install, it did the exact same thing, which dispels that notion. I have tried cranking my Civ graphics settings way down, but that didn't help either.
My computer more than meets the minimum specifications for Civ 6 and is only just shy of the "recommended" specs, as that requires a 770 graphics card, and I have a 760.
I'm really at a loss for what's going on or what I should do. Any help, suggestions, or ideas are welcome and greatly appreciated!!