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Nvidia 3090(black screen, VGA debug light)

D

deionthegreat

n00b
Joined
Aug 7, 2021
Messages
4
Let's see what everyone thinks here...

So the other day I started having issues where suddenly I would get a black screen (could still hear audio) would last for about 10 seconds and then my PC would try to restart and wouldn't post (VGA debug light came on). The logo on the card would not be lit up but the fans would still be spinning. This has happened multiple times, and constantly on a certain games I can re create the issue almost instantly.

On furmark I can get it to happen instantly as well.

I finally put my 2070 in and it has absolutely zero issues at all...

My thought is it's either my 850w PSU?? Or I just have a bad card??

What does everyone think??

Thank you!
 
Sounds like either the video card or the power supply.

If you have a voltmeter, measure the 12v rail feeding the GPU. Watch the value before starting a 3d app, then see if the voltage fluctuates when you do launch a 3d app. PSU that drops significantly will cause video issues. If it drops below 11.5v, that's a bit suspect PSU quality right there, or just inadequate. Below 11.2v you will probably have issues and I would try a new power supply. When this happens, the voltage regulators on the video card have to pull more current to draw the same power, it's hard on those GPU components and just accelerates the death of a shit PSU.. if the PSU fries it can send voltage spikes into your components... I buy nothing smaller than 1000w anymore. You want to always have some excess PSU capacity.

This could also be the GPU. To know for sure you would need to try a different GPU that has the same power requirements. The 2070 only needs up to 250W, the 3090 uses up to 360W, more if overclocked.

As part of your testing, install GPU-Z. Open it up, to go the sensors page, for Board power draw, set it to record the Max value seen. For all of the voltages, tell it to record the Min value seen. Clicking in the fields changes from the Current reading to either the Min, Max, or Average. Very useful. Do this with the 2070 first, and make notes of the values seen vs various games. Reset the readings between games after making a note of what they were. Then swap to the 3090, try again.
 
Also make sure to use two seperate cables of the PSU not just one branch. More specific info wouldn't hurt either. Brand and model of card and psu would help.
 
Easiest way to find out which is bad is to test your 3090 in a friends rig with an appropriately powered psu or borrow said psu to test with.
If you have a pc shop close by they may test your gpu and or psu for a small fee.
 
It's a Nvidia RTX GeForce 3090 FE.

So I tried with a new PSU I bought a Corsair RM850 and same thing happened.

I run furmark for 4mins with no issues, alt tab to something else ( go to browser, or steam whatever it may be) and screen goes black and logo light on 3090 goes out. Fans keep spinning on GPU and everything else keeps working, just no display. When this happens the VGA debug light pops up on my mobo.
 
GoodBoy said:
Sounds like either the video card or the power supply.

If you have a voltmeter, measure the 12v rail feeding the GPU. Watch the value before starting a 3d app, then see if the voltage fluctuates when you do launch a 3d app. PSU that drops significantly will cause video issues. If it drops below 11.5v, that's a bit suspect PSU quality right there, or just inadequate. Below 11.2v you will probably have issues and I would try a new power supply. When this happens, the voltage regulators on the video card have to pull more current to draw the same power, it's hard on those GPU components and just accelerates the death of a shit PSU.. if the PSU fries it can send voltage spikes into your components... I buy nothing smaller than 1000w anymore. You want to always have some excess PSU capacity.

This could also be the GPU. To know for sure you would need to try a different GPU that has the same power requirements. The 2070 only needs up to 250W, the 3090 uses up to 360W, more if overclocked.

As part of your testing, install GPU-Z. Open it up, to go the sensors page, for Board power draw, set it to record the Max value seen. For all of the voltages, tell it to record the Min value seen. Clicking in the fields changes from the Current reading to either the Min, Max, or Average. Very useful. Do this with the 2070 first, and make notes of the values seen vs various games. Reset the readings between games after making a note of what they were. Then swap to the 3090, try again.
Click to expand...
Thank you for the tips, I really appreciate the help!
 
deionthegreat said:
It's a Nvidia RTX GeForce 3090 FE.

So I tried with a new PSU I bought a Corsair RM850 and same thing happened.

I run furmark for 4mins with no issues, alt tab to something else ( go to browser, or steam whatever it may be) and screen goes black and logo light on 3090 goes out. Fans keep spinning on GPU and everything else keeps working, just no display. When this happens the VGA debug light pops up on my mobo.
Click to expand...
Youve found your problem. Time to start the rma process unfortunately :(
Hopefully nvidias return procedure is a quick one.
GL.
 
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