Black Screen after installing GPU

lerodemmy · October 13, 2023

My new PC has been working fine without a graphics card installed. The motherboard (Strix Z790-E), CPU (13900K) and RAM (Dominator Titanium 64GB) are all new.

The SSD (Samsung 980 Pro) and PSU (Corsair RM1000x) are from my previous build.

I just tried popping in the graphics card (3090 FTW3) from my previous build, and I’m getting a black screen. The monitor turns on when I turn the PC on, but it just says no signal. I can’t access the BIOS.

I’ve tried unplugging and replugging everything. The PC seems like it’s otherwise running normally, as all the fans are spinning and lit up, and I can hear the AIO pump. The graphics card fans do spin at startup and the RGB is on.

The monitor is plugged into the graphics card’s HDMI port.

AS I WAS ABOUT TO POST THIS:

I tried plugging into the motherboard’s HDMI and the PC started normally, allowing me to get to the desktop. I looked in Task Manager and the 3090 is not listed, only Intel UHD Graphics.

This means that I should be able to get to the BIOS with the graphics card installed, though I’d have to be plugged into the motherboard’s HDMI. Hopefully someone can advise me from here.

lerodemmy · October 13, 2023

Edit: Turns out it was a driver issue. I found in Device Manager that Windows Display Adapter was showing error code 43. I clicked update driver and the GPU showed up. I shut down, plugged into the GPU’s HDMI and it worked.

Edited October 13, 2023 by lerodemmy
Solution found