PC Won't Display Video and Shows VGA Red Light – Need Help!

Hey folks, I just finished building my new PC almost entirely from scratch, but I'm hitting a snag. When I boot it up, there's no video signal, and the VGA light is illuminated. I've tested the GPU, monitor, and cables on my older setup, and they're all functioning perfectly. So far, I've tried reseating the GPU, checking the cables, using a different cable and monitor, and even updated the GPU driver. Unfortunately, none of this has worked, and I'm at a loss for what else to do. Is it possible my GPU is simply outdated? It's the only component I've reused from my old build along with the SATA SSD which serves as my boot drive. Here are my specs: - Gigabyte B650 Eagle ATX - Ryzen 5 7600X - 32GB Vengeance DDR5 6200 MHz - GTX 1050 Ti - Pure Power 12 850W 80+ Gold Any advice would be greatly appreciated!