Here is the photo of BIOS splash screen when powered on:
Did you ever see anything like this?
It continues printing garbage instead of usual messages while booting but it does not boot any medium or show boot options menu.
Tried to remove everything but one DIMM, reset CMOS settings and left overnight with no power and CR2032 battery.
Is it possible to re-flash BIOS without seeing what's on the screen?
Or can I plug a pcie video card but how do I permanently disable onboard video?
What else could be done before replacing the entire mother board?