Question VGA debug LED lights up after installing Windows/Drivers

[AquelaBatataLegal]

I built my PC
4070 Super
AMD Ryzen 5 7600X
ASUS TUF Gaming B650M-E
Corsair 750X Shift
DDR5 Cl36 6000MHz G. Skill X5 Flare RAM -with EXPO turned on

and after several boots, it always displayed an image and had no issues. Eventually (after about five tests, already accessing the BIOS), I decided to install Windows, and the installation went smoothly.

Then, I installed the GPU drivers using GeForce Experience, and after finishing everything, I restarted the PC to apply some updates that required a reboot. That’s when the headache started—no image, and the VGA LED stayed on. I turned off the power supply, plugged the HDMI cable into the motherboard this time, and got an image, but it showed a corrupted Windows screen. Upon restarting, it would not display an image at all and light up the VGA LED.

If I turn off the power supply and turn it back on, I get an image when using the motherboard’s HDMI port, but never when using the GPU’s HDMI. When it does show an image, it says the last boot failed and allows me to access the BIOS. But if I restart the PC after that, it stops displaying again, with either the DRAM or VGA LED staying on (mainly the VGA, the DRAM LED just lighted up once).
What should I do now? I'm unsure if it's a hardware or software issue, since it was working fine before...

In summary: In the current state, after turning the power supply off and on again and using the motherboard's HDMI port, the first boot works fine, only displaying a message saying the last boot failed and opening the BIOS. However, after that boot, if I reset the PC, it won’t display an image again, with the VGA LED staying on. If the HDMI is connected to the GPU, it never displays an image.

 

[Lutfij]

Welcome to the forums, newcomer!

ASUS TUF Gaming B650M-E
What BIOS version are you on for your motherboard?

If you remove the discrete GPU from your system, do you see artifacting on your display output off the motherboard(iGPU)?

With your discrete GPU removed, disconnected from the wall and display, clear the CMOS. I'd have sourced a higher wattage PSU for your entire build. One other thing to note is that some Shift series of units have been hit or miss being DoA.

 

[DRagor]

Latest NVidia drivers are causing problems like you described. Remove GPU, run Windows using integrated graphics, remove NVidia drivers and install previous version.

 

[AquelaBatataLegal]

Thanks for the welcome!

Sorry that I forgot to mention, but the MOBO BIOS version is 3035 x64.

I'm not home right now but as soon as a get there I will try removing the GPU and uninstalling the drivers (hope that works).

About the PSU, I ruled it out since the computer was working fine, unless one of drivers increase the GPU power consumption, thus causing the boot to fail...