Have tried Bios 0053 and 0055 and both show the same issue.
I have an Nvidia Graphics Card installed that works just fine.
If I remove the VGA Card and try and use the on-board VGA the board just gives 2beeps+2beeps at POST and no display.
If I put the VGA Card back in it boots just fine.
Can't get into the bios with no VGA card, tried Config Setting with the jumper and also power out / bios battery out.
Have tried forcing onboard in the Bios with the VGA Card fitted then removing it (IGD Always/PVA - IGD/IGD PVP - DVI-D) but still as soon as I remove the card I have failure, have tried two processors i5-2400S with HDG2000 and i7-2600K with HDG3000.
I confirm when removing a PCIe* video card, any of the 3 video ports (up to two) on the back of the board should start working automatically. Hence, based on the troubleshooting you've described, I'd suggest trying with the most current 0057 BIOS (click here).
Note: Once the update is done, please, restart the system into BIOS and proceed as follows:
1. Press <F9> to restore BIOS default settings.
2. Reset any customized BIOS settings.
3. Clear all DMI event logs by setting the option to "Enable", which is located in the Configuration/Event Log section of the BIOS Setup utility.
4. Finally, press <F10> to save the new settings and reboot the system, and test.