|Just double checking to be sure: Did you remove the AC power plug before trying the CMOS resets? If not, try them again.|
INT Graphics should have been internal graphics which should have worked with the motherboard's graphics ports unless you happen to be using a DVI to VGA adapter which only works on DVI-I ports and not on DVI-D ports which do not support the feature.
Is is possible that you changed the settings from PCIe 16X to plain old PCI? This would require a PCI graphics card to get any signal. Of course, the reset should have changed it back to factory defaults as far as the graphics are concerned so after that, one or the other of the graphics ports should be supported.
Last thought: If you are using display port or HDMI ports, try the VGA or DVI ports to see if that makes a difference.
You have to be a little bit crazy to keep you from going insane.