The code A0 is Boot Error. This means you don't have a boot device, SSD, NVME, HDD or Windows not installed.
What you can do, because no image is a bit odd.
- Check if the display cable is connected to the card and not the board, although it should still boot normally.
- Try booting from a USB drive with Windows Setup to see if it at least goes somewhere.
- Check is SSD/HDD has SATA well connhected and to SATA port 1 and have SATA power.
- Check if NVME is well slotted in, you should have Q-latch on that board, so is SUPER simple. Use the M.2 that is closest to the CPU.
Good Luck
The Englishman