Here is my system:
A PC running Windows 11, MB is a TUF Gaming Plus wifi with Ryzen 7 - 5700x CPU and an RX6600 GPU. The monitor is a 4K samsung QLED TV connected via HDMI via a Marantz SR7005 AVR. On bootup there is no screen showing POST info, all black until Windows (or Linux) bootsup. Past experience has shown that if I connected to an on-board GPU, this would not be a problem. Any idea why this happens? If I connect directly to the TV the POST info screen does show.