I'm getting no monitor signal from my newly built pc. I have a Asus rog strix b550 motherboard and the vga light is a constant white. I've re seated the ram and tried all the DP and HDMI ports. I have a amd ryzen 7 3700x and a red devil 5700xt. I've also tried re seating the gpu to no avail. I'm really freaking out and don't know what to do next. I also have a gigabyte monitor