thats a shame? so we need to get your other computer running. you need to get the right psu for that board i will have look for one now.
just got this from intel sites you need a 12V PSU read below What kind of power supply do I need for the IntelĀ® Desktop Board D865GVHZ? The Desktop Board D865GVHZ requires a power supply that complies with the ATX/ATX12V Power Supply Design Guide Version 1.2. This design guide is available from http://www.formfactors.org The ATX12V power supply required for the Desktop Board D865GVHZ has the standard 20-pin ATX Main Power Connector, and a 4-pin +12V Aux. Power Connector. The 4-pin +12V power connector has been added to enable the delivery of more +12VDC current to the desktop board. This connector is used by the board to power the processor's voltage regulator module (VRM). CAUTION: The system will not boot if there is a failure to use an ATX12V power supply, or by not connecting additional power supply leads to the D865GVHZ board.
it mean that you need a 12V micro ATX PSU SORRY ITS LATE HERE I AM GOING TO BED WILL SPEAK TO YOU THE MORNING.
Did U check your BIOS..is the computer booting up with any type of display on the Monitor..error messages anything