- Aug 23, 2012
- Asus ROG Strix Z490-E
- RTX 3080 Ti (Win) / RX 560 (Mac)
- Mobile Phone
I mean that the computer doesn't want to boot when the display is connected to MB's DisplayPort or isn't connected at all, the result is the same - beeping (VGA card error). It looks like the DisplayPort is completely dead or somethin'. It's not recognized even when the system is booted and I connect the display.
I have run into this in the past, I believe the computer puts out 3 beeps if you have a speaker connected. I still keep one connected because it's REALLY handy for troubleshooting.
I solved this by running extra cables so that I never have to move plugs around to switch between iGPU for Catalina and RTX for Windows. This motherboard does some kind of check for a monitor at bootup. What I think is happening is it knows there's a DGPU installed, but doesn't see a monitor connected to it so it's throwing the error. Perhaps if you run one extra line so the DGPU still "sees" a monitor connected, while the iGPU is also connected to the monitor you want to use.