I will like to apologize on the delay on your answer. After reading all the information you POSTED it seems the problem is with mother video output. To best verify this I will recommend to get a video card and connect it to the proper PCI slot and test booting up.
Also I will recommend checking with the manufacturer of your system board to ensure if there is a jumper setting to clear the CMOS and or if the system board is in warranty.
This is because chipset is Intel but the OEM on the system board is for each OEM like (HP, Dell, etc).