Just built my first PC and it posted but I am having some issues. I attached a usb to the computer before turning it on that had windows on it. I was unable to select it when booting but was prompted to download windows anyway. Once in windows The computer is using the on board display rather than my gpu even though the hdmi is plugged into my gpu. The other issue I had is there is no network driver installed so I cannot connect to the internet. The motherboard is a gigabyte z490 vision G it came with a cd but I dont have a cd reader. Wondering where to go from here to fix the GPU and internet issue? Thanks