I'm trying to switch the rig in my signature from a PCIe card to integrated graphics for a HWBOT contest.
BIOS setting of igfx for primary display does not stick and BIOS uses the PCIe VGA.
I tried several times with no PCIe card installed. BIOS does not find the igfx and does not finish POST when igfx is the only choice. POST ends with code A0, the white VGA led lit and a blank screen.
Igfx is not found by Windows 7, so the Intel driver cannot be installed.
A clue to the problem is that BIOS settings System Agent tab shows the "Integrated Graphics VBIOS version" as N/A.
The above happens for BIOS version 801 and factory original 401.