If you only have one monitor connected to this PC, it should be connected to the NVidia card, not to either the onboard Intel Graphics HDMI or DP port. If you have a second monitor that's connected to one of the on-board Intel Graphics ports, you have to enable the Multi-Display option in BIOS setup and set the Primary Display option to NVidia.  See table 3, here.
Sometimes when I boot up, the power light gives me this pattern, which according to the chart is a PCI of video card/chip failure. I assume the of actually should be or. I have an Nvidia Quadro K5200 card installed, and it has 3 displays connected to it. The video card functions perfectly, and the computer boots up just fine. I also put in an Asus Xonar sound card that as of now still doesn't have a Windows 11 driver. Could the sound card be causing the blinking light?  Is this anything to be concerned about? I note that this doesn't always happen when I boot.
XPS 8940, blinking power light 3 orange 2 white