I cannot promise this will help - I ran into this suggestion
while searching for something else. These are instructions for
another board, but they may work for you.
"Disabling onboard video
You can disable the 810/810e chipset graphics this way.
1)Install your new video card in the PCI slot.
2)Boot to the bios
3)Set the new card as the primary graphics adapter. (this
sets the onboard graphics as a secondary adapter for
multi-monitor support.)
Now you can disable the onboard graphics in this manner:
1) Go to device manager in windows
2) Right click the icon for the Intel 810 graphics adapter.
3) click properties
4)un-check "exists in all hardware profiles"
5)Re-boot
6)Go back to Device manager and back into properties for
the 810 display adapter.
7) Click the check box for "disabled in this hardware profile"
I got this info from the Intel site ( no luck looking for
info at E for me ) and it worked without a hitch. If you do
not follow up by disabling the adapter ( in device manager ),
in this manner you get all kinds of conflicts, freezing etc.
Hope this helps anyone trying to do this.
LM "