vga light on but gpu working fine

Hi

Welcome to Microsoft community.

The VGA light on your motherboard is part of the motherboard's POST (Power-On Self-Test) system. If the light remains on after booting, it generally indicates that there is a problem with the graphics card or its connection to the motherboard.

However, as you mentioned that your GPU works fine once booted and you have no issues while gaming, this could indicate a few possible scenarios:

1. Loose Connection: Even if it seems unlikely because you've changed several components already, double-check to ensure your GPU is seated properly in its PCIe slot and power cables are securely connected.
2. BIOS/UEFI Settings: Sometimes, certain settings in BIOS/UEFI can cause such issues. Ensure your BIOS/UEFI is set to use PCIe graphics first (not integrated graphics). Also, consider updating your BIOS/UEFI if an update is available from NZXT for your specific model. Disclaimer:  Microsoft provides no assurances and/or warranties, implied or otherwise, and  is not responsible for the information you receive from the third-party  linked sites or any support related to technology.   If you are going to modify BIOS Settings, please  back up all your personal files first to ensure you do not lose data.
3. GPU Firmware or Driver Issue: Check if there are any updates available for your GPU's firmware or drivers from NVIDIA's website.
4. Power Supply Issue: While you've already changed PSU, it's still possible that the power supply isn't able to provide enough power during startup but manages fine later on when demand isn't peaking as high.
5. Motherboard Issue: Despite changing motherboards already too, it could be an issue with how this particular model of motherboard interacts with other hardware during bootup process.
6. Monitor or Cable Issue: It could be related to monitor detection during startup phase – perhaps due to cable issue or monitor itself.

Please let me know if you need any further assistance. Thank you. 

Best regards

Derrick Qian | Microsoft Community Support Specialist

i have a problem when i turn on my pc VGA light stays on and no boot but when i wake up my monitor my pc boot fine (but that don't always work) and sometimes i press the reset button and it works but it used to boot and wake my monitor just fine i tried everything i tried to change my display port cables i changed my motherboard i changed my psu and nothing worked but when it turn on my pc works fine and i game with no problems

specs
R5 3600x
nzxt n7 b550
rtx 2070 super
psu coolermaster v850i gold

I have the same problem and a number of departments have confirmed that the problem is in the screen because when the computer starts up, the motherboard checks all the parts and makes sure there is no problem, and when it reaches the VGA stage, it discovers that there is no screen due to the screen being delayed at the beginning of operation. To avoid this problem, turn on the screen first and then turn on the computer.

R5 3600x doesn't support integrated graphics.

That's why the VGA yellow led is on and your monitor won't work.

Old motherboards had onboard integrated graphics so they won't need special processor to work. The situation changed since the new motherboards don't have integrated graphics, hence you need to rely on the CPU for this function. But as you know, is about money, producers found a way to skim the market, specially NVIDIA, who first entered the GPU market and since then, they have the monopoly.

Anyway, installing a GPU circumvent the problem. I would not purchase NVIDIA due to their monopoly, and the fact that they set the price they wish. Instead, I would try Intel GPUs. Intel has recently entered the market, I I believe that their prices are competitive.

Cheers.

i have a similar problem, everything is brand new and seated correctly double and triple checked and the light still comes on

pc specs: gigabyte gaming x ax

7800x3d

PNY 4090

1000w asus tuf psu

arctic freeze 360

referring to the dude above, my monitor is always in standby mode so even if i hit the power button (on) on my pc, my monitor remains off until i press the button. could this be causing the VGA light?

TIA!

i have the same issue my vga light is on but can it be because i dont have my gpu connected to anything because i currently dont have a monitor so i js have my pc sitting here until i buy one but i just turned it on and the vga light is on can it be because i dont have it connected to anything?