Question Can a new 4k 240hz monitor damage a GPU? Unique situation is frustrating. Please Help!

Feb 22, 2025
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Can a monitor brick a GPU? I have a unique situation. I recently decided to upgrade my monitor as a first step before building a new system. My current system is:

Asus Rogue Strix Z390-E
Intel 9900kf processor
RTX 3090 Kingpin Hybrid GPU
Corsair hx1200i PSU
CORSAIR Vengeance LPX 32GB (4 x 8GB) DDR4 3000 (PC4 24000)

Old monitor was Asus VG27BQ
New Monitor is Asus PG32UCDP at 4k 240hz

So to the details of what happened. I set up the new monitor, figured i would try 240hz at 4k even though my cpu is rated at 4k 60hz. Everything looked excellent, i turned HDR on in windows 10 (my current OS) and then booted up Black ops 6. Everything booted extremely quick and the picture was excellent. I started a multiplayer match and was running around 88fps consistently.

After about 4 rounds, i was just curious so i started looking through the monitor settings. I found the setting on the OSD for the monitor under gaming>variable refresh rate. The slider was set to on position. All i did was click left to see what happened if i turned it ‘off’ and the screen went black, my pc went silent. Then after about 20 seconds i got static on the screen top to bottom. Completely crashed the pc. I manually switched off the pc and rebooted it.

Everything booted fine, and i went and turned that variable refresh setting back to on. I attempted to reboot black ops, and it crashed the game within seconds with an error message. I tried several things, including dropping my refresh rate to 60hz, scanning and repairing the game, uninstalling black ops 6 twice and reinstalling, reinstalling gpu drivers, and even switching back to my old asus monitor and using a different display port cable, and the game still crashes within seconds of booting up.

So my question to the pros, did this one setting change mid game cause a hardware failure? Could it be the GPU or something else? I am fairly tech savvy, I have built about 20 machines in my lifetime. This occasion has me stumped. I have already put in a return for the monitor because I wouldn’t want to risk a new machine with it. Any advice or insights would be greatly appreciated. Thanks!
 
Welcome to the forums, newcomer!

Can a monitor brick a GPU? I have a unique situation. I recently decided to upgrade my monitor as a first step before building a new system.
Simple answer; no.

You might want to run DDU to remove all GPU drivers(intel, AMD and Nvidia) in Safe Mode, then manually install the latest GPU driver sourced from Nvidia's support site in an elevated command, i.e, Right click installer>Run as Administrator.

Corsair hx1200i PSU
How old is the PSU in your build?

You forgot to mention the make and model of your case and the temps to the system when these issues cropped up.
 
Welcome to the forums, newcomer!

Can a monitor brick a GPU? I have a unique situation. I recently decided to upgrade my monitor as a first step before building a new system.
Simple answer; no.

You might want to run DDU to remove all GPU drivers(intel, AMD and Nvidia) in Safe Mode, then manually install the latest GPU driver sourced from Nvidia's support site in an elevated command, i.e, Right click installer>Run as Administrator.

Corsair hx1200i PSU
How old is the PSU in your build?

You forgot to mention the make and model of your case and the temps to the system when these issues cropped up.
the case is a fractal design, not sure the model but got it 4 years ago. I tried what you said to do, uninstalled the drivers in safe mode, reinstalled after boot. and the game is still crashing. The temps were cpu core max of 76c, Gpu max temp of 24.7c. the error code was this: 0x00001338 (915194526) N
Signature: 85EFE77C-FAD7FF9F-EDB2BF21-ADF5FD1E
Location: 0x00007FFA9F80B699 (21445694)
Executable: cod.exe
 
the case is a fractal design, not sure the model but got it 4 years ago. I tried what you said to do, uninstalled the drivers in safe mode, reinstalled after boot. and the game is still crashing. The temps were cpu core max of 76c, Gpu max temp of 24.7c. the error code was this: 0x00001338 (915194526) N
Signature: 85EFE77C-FAD7FF9F-EDB2BF21-ADF5FD1E
Location: 0x00007FFA9F80B699 (21445694)
Executable: cod.exe
The psu is about 4 years old also. But key point is i never had an issue until this monitor….