I just built my first ever gaming computer, and when I started it up, it posted A2 and then got stuck. There is no display, not even a signal and I've tried unplugging the HDD and SSD, turning the computer on and off multiple times, unplugging the HDMI cable from the GPU and plugging it into the motherboard, and unplugging the keyboard and mouse. I haven't tried going into the BIOS, because I'm not getting any display, and I didn't want to break anything. I'm using the Gigabyte Z390 Aorus Ultra, if it helps.
