I just assembled a new computer featuring an AMD Ryzen 7 9800X3D processor, an ASUS PRIME B850-PLUS WIFI motherboard, Corsair Vengeance 2x32GB DDR5 RAM, an Asus Prime Radeon RX 9070 XT OC 16GB GPU, a Samsung 990 Pro M.2 2TB SSD, an MSI MAG A850L PCIE5 PSU, and an ARCTIC Liquid Freezer III Pro 240 A-RGB water cooler. Everything powers on when I boot it up, but I'm getting no signal on the monitor, which I know is working. I noticed a red light on the GPU initially because one of the cables wasn't connected properly, but I think that's sorted out now. I also see no LED indicators lit up on the motherboard. I'm hoping to find solutions without disassembling everything again. Any advice?
3 Answers
Double-check that all the cables are plugged in securely, especially the ones to the GPU and the monitor's power cable. Also, ensure the GPU is seated properly in the PCIe slot; the PC might boot up but you won't see video without it being properly inserted. Lastly, verify that you've selected the correct input source on your monitor.
Have you confirmed that the input settings on your monitor are correct? Sometimes the monitor might default to another input, and you'll need to switch it back to the one your GPU is connected to.
Have you tried connecting your monitor to the dedicated GPU ports? The motherboard does have HDMI and DP outputs, but those aren't the ones to use. Make sure you're using the ports on the GPU directly.
I did connect it to the HDMI port on the GPU, but it still isn't working.

I've checked both the HDMI and DisplayPort options on my monitor, but still no luck.