I was having this exact same issue tried every solution suggested with nothing working.
Turns out it was that since my setup has 2 graphics cards - one Nvidia one and the one built into the intel chip- it also had 2 different places you could connect monitors.
I had plugged my monitors into the intel chip while the motherboard was connected to the NVidia gpu.
Once I connected the monitors to the NVidia my startup screens showed the normal logos and became able to display the BIOS on my monitor.