Monitor suddenly turns off with "no signal" if gaming

[AWT]

Hi.

I was playing a game, and suddenly the screen turned itself off mid game and reported "no signal".
I restarted the PC (as it was the only way to get the screen to switch on again), tried to launch the game again, and as soon as 3D was involved it turned off again (with no response to any button input). I then tried to run the game via the TV, but same thing happened.
So I uninstalled the driver using DDU, reinstalled the driver and then stress tested the GPU via OCCT - all tests passed without errors.
I then relaunched the game, and it seemed to work, but after a couple of minutes, the screen turned itself off again (reporting "no DP signal" as it was shutting down).
I made sure the graphics card power connectors were firmly connected, but it didn't make a difference.
Could it really be that the graphics card is already dead? I'm using an RTX 3080, so I wouldn't expect it to be at end of life this early (it's probably less than 3 years old); the TV isn't ancient either (and only used rarely), and the monitor is brand new (maybe 1 month old).
Any advice what I could do to further diagnose/solve this problem would be highly appreciated.
My full specs are in my profile bio.

Thanks in advance.

PS1: A problem I have had for a while (long before this no signal issue started) is that the computer won't switch to the DP monitor during boot, it only provides signal via HDMI until Windows is started (only once the Login screen appears does the monitor receive signal via DP).
PS2: I found this, but I'm unsure whether to use it as it doesn't mention the 3080, only the 3080Ti:
https://nvidia.custhelp.com/app/answers/detail/a_id/5233

[AWT]

Oh and I already reset the BIOS last time there was a hardware change. Everything worked perfectly, the problem suddenly appeared. It seems some sort of defect with the outputs or something (the problem is it affects both HDMI and DP).

[andreasaspenberg575]

all i can think of is that the game might output a signal too demanding for your monitor to handle. nvidia control panel have a function that enables you to test various frequencies and resolutions. you can try that until you find what causes your monitor to cut out. it have a safeguard, as it requires a signal from you to keep the resolution set.

[[-iD-]]

im sure no one has mentioned this.

power supply in monitor is bad 90% chance.
9% chance cable or connectors are bad.

1% you are running out of the monitors ability range.
but if the power fully goes off thats your power supply. cuz when power stops you are tripping a power regulator. maybe its producing power surges.

[AWT]

The PSU is quite a likely culprit, I agree. Although it's only 2 years old, and should easily handle the stress I've been putting on it on average.
The strange thing is that the entire system continues running when the no signal issue occurs, it seems like only the 3D chip is running into problems (on the other hand, given that the 3D chip is probably the most power drawing component in the entire system, it could still indicate a PSU problem). All indicators that would point to a system crash seem like everything's running fine even when display signal has cut out.
I also have started to run into issues with POST reporting instability at startup since the problem started appearing, with the mainboard indicator showing a VGA issue (but that can usually be solved by fiddling with the connectors etc).
I will ask a friend to bring a GPU with him next time he visits, to try and exclude that as the possible problem. If I continue to have VGA issues at startup, I can narrow it down to PSU and/or MB, and then replace both.

[[-iD-]]

Origineel geplaatst door AWT:

The PSU is quite a likely culprit, I agree. Although it's only 2 years old, and should easily handle the stress I've been putting on it on average.
The strange thing is that the entire system continues running when the no signal issue occurs, it seems like only the 3D chip is running into problems (on the other hand, given that the 3D chip is probably the most power drawing component in the entire system, it could still indicate a PSU problem). All indicators that would point to a system crash seem like everything's running fine even when display signal has cut out.
I also have started to run into issues with POST reporting instability at startup since the problem started appearing, with the mainboard indicator showing a VGA issue (but that can usually be solved by fiddling with the connectors etc).
I will ask a friend to bring a GPU with him next time he visits, to try and exclude that as the possible problem. If I continue to have VGA issues at startup, I can narrow it down to PSU and/or MB, and then replace both.

start with the cable, those are easy to replace. but you got a great plan. also if you have onboard video, try using that instead of your vga.
and there is only one 3d chip in your system, its the gpu.
definitely "monitor psu" or cables.
not your pc psu.

[AWT]

@ Andreas
The monitor can be overclocked to 170 MHz, and is brand new, so it shouldn't have an issue displaying 165Hz. Also, if that was the problem, I wouldn't have the same problem when trying to play a game @ 60Hz on the TV. (Besides, the problem appears mid game - if the output was too much to handle, it would crash instantly upon launch).
It must be either the PSU being instable, the GPU's 3D chip being defective (I once had an old ATI/AMD card with a dead 3D chip, which instantly crashed the entire system when I launched a 3D application) or the mainboard connector somehow dropping contact with the graphics card intermittently. I also thought maybe the connectors on the graphics card may have an issue, but it's extremely unlikely for 2 connectors to fail at the same time.

[[-iD-]]

Origineel geplaatst door AWT:

@ Andreas
The monitor can be overclocked to 170 MHz, and is brand new, so it shouldn't have an issue displaying 165Hz. Also, if that was the problem, I wouldn't have the same problem when trying to play a game @ 60Hz on the TV. (Besides, the problem appears mid game - if the output was too much to handle, it would crash instantly upon launch).
It must be either the PSU being instable, the GPU's 3D chip being defective (I once had an old ATI/AMD card with a dead 3D chip, which instantly crashed the entire system when I launched a 3D application) or the mainboard connector somehow dropping contact with the graphics card intermittently. I also thought maybe the connectors on the graphics card may have an issue, but it's extremely unlikely for 2 connectors to fail at the same time.

these days if a gpu crashes the driver resets it.
not likely system psu.

[AWT]

Origineel geplaatst door -iD-:

Origineel geplaatst door AWT:

The PSU is quite a likely culprit, I agree. Although it's only 2 years old, and should easily handle the stress I've been putting on it on average.
The strange thing is that the entire system continues running when the no signal issue occurs, it seems like only the 3D chip is running into problems (on the other hand, given that the 3D chip is probably the most power drawing component in the entire system, it could still indicate a PSU problem). All indicators that would point to a system crash seem like everything's running fine even when display signal has cut out.
I also have started to run into issues with POST reporting instability at startup since the problem started appearing, with the mainboard indicator showing a VGA issue (but that can usually be solved by fiddling with the connectors etc).
I will ask a friend to bring a GPU with him next time he visits, to try and exclude that as the possible problem. If I continue to have VGA issues at startup, I can narrow it down to PSU and/or MB, and then replace both.

start with the cable, those are easy to replace. but you got a great plan. also if you have onboard video, try using that instead of your vga.
and there is only one 3d chip in your system, its the gpu.
definitely "monitor psu" or cables.
not your pc psu.

Will try the cable for sure, although the problem is both screens show no signal when I have Windows running on the monitor and start a game on the TV.
One final question: Is there any way to trigger a different display mode with a key combo?

[[-iD-]]

Origineel geplaatst door AWT:

Origineel geplaatst door -iD-:

start with the cable, those are easy to replace. but you got a great plan. also if you have onboard video, try using that instead of your vga.
and there is only one 3d chip in your system, its the gpu.
definitely "monitor psu" or cables.
not your pc psu.

Will try the cable for sure, although the problem is both screens show no signal when I have Windows running on the monitor and start a game on the TV.
One final question: Is there any way to trigger a different display mode with a key combo?

you'd need a macro app, or something that can access windows display settings without running the windows settings app.
i dunno if windows lets apps do that tbh cuz i've never tried.

but im sure something has been made.

when did it start btw.

[AWT]

It started a few days ago. System ran fine since I upgraded CPU/RAM last month, everything was stable, and then during gaming the problem suddenly appeared.
I'm just running an OCCT power test to check the PSU's stability, just noticed the CPU is getting quite warm (90°C after 5 min testing, watercooled). Maybe the CPU is overheating and that's what shuts off the system. Will reapply thermal paste tomorrow and see if that helps.

[_I_]

just to rule things out, try another monitor, or the monitor on another device

[[-iD-]]

Origineel geplaatst door AWT:

It started a few days ago. System ran fine since I upgraded CPU/RAM last month, everything was stable, and then during gaming the problem suddenly appeared.
I'm just running an OCCT power test to check the PSU's stability, just noticed the CPU is getting quite warm (89°C, watercooled). Maybe the CPU is overheating and that's what shuts off the system. Will reapply thermal paste tomorrow and see if that helps.

those are really not accurate. you need a volt meter.
try it on psu, try it on monitor etc hell try it on tv too.

[[-iD-]]

Origineel geplaatst door _I_:

just to rule things out, try another monitor, or the monitor on another device

he tried tv already.

the only reason it may happen on tv is cuz of being out of hz range at this rate.

it could be the controller for his gpu that does output.



op how many hdmi slots do you have on your gpu?
how many DP slots?
which version does your card support?
are they the right cables? etc.

[andreasaspenberg575]

the fact that your cpu is overheating could be a problem. a solution to that is to go into windows power settings and set energy control for processor(sorry if i use the wrong word but, my windows is in norwegian) and set max and minimum to 99%. that will turn off your turbo and prevent your cpu from running as hot.

[[-iD-]]

Origineel geplaatst door andreasaspenberg575:

the fact that your cpu is overheating could be a problem. a solution to that is to go into windows power settings and set energy control for processor(sorry if i use the wrong word but, my windows is in norwegian) and set max and minimum to 99%. that will turn off your turbo and prevent your cpu from running as hot.

nope, the cpu will throttle if it starts and 89 is not overheating man.
cpus all have a temp threshold and they downclock if they reach it.
and its a lot higher than you seem to think it is.

they will run to spec for their entire lifespan, that includes 89 degrees.

absolutely no reason to turn off "turbo"
its not really called that any more. do some more research.