Gigabyte Z690 UD AX DDR4 distingusihing failures+default video
On this motherboard with a CPU (requiring discrete graphics) supported by the BIOS (version F3) and a new video card, it has a beep code indicating a CPU failure while the onboard diagnostic LEDs indicate a video system failure and using a different motherboard of the same model had the same result despite confiriming that the new video card along with the power supply as well as the connected display/cable was operational in another system.
So therefore, I've found that the Video diagnostic LED illuminated before CPU diagnostics were performed and since the CPU has failed, video diagnostics could not be performed because the system halted on failure.
It works with a CPU supporting video and a display connected to a motherboard port; I've found a default BIOS setting set to always use the onboard video which the original CPU (most likely functional) does not have and therefore, unable to start even with a known working video card in an expansion slot with a connected and working display/cable.
Updating the BIOS to version F21 fixed this problem along with the issue that a GC-ALPINE RIDGE Thunderbolt card was not being detected under Windows 11 even though it was in a x4 PCIe slot and showing up in the BIOS screens.
So therefore, I've found that the Video diagnostic LED illuminated before CPU diagnostics were performed and since the CPU has failed, video diagnostics could not be performed because the system halted on failure.
It works with a CPU supporting video and a display connected to a motherboard port; I've found a default BIOS setting set to always use the onboard video which the original CPU (most likely functional) does not have and therefore, unable to start even with a known working video card in an expansion slot with a connected and working display/cable.
Updating the BIOS to version F21 fixed this problem along with the issue that a GC-ALPINE RIDGE Thunderbolt card was not being detected under Windows 11 even though it was in a x4 PCIe slot and showing up in the BIOS screens.