Well,the manual don't say anything...The motherboard runs but don't appears the "POST".It's very difficult see the problem,someone more have a idea?
Found this in the online manual.
b) Power is on, fans are running but there is no display
1. Make sure the monitor is turned on and the monitor cable is properly connected
to the PC.
2. Check the VGA adapter card (if applicable) is inserted properly.
3. Listen for beep sounds. If you are using internal PC speaker make sure it is
connected.a. continuous 3 short beeps : memory not detected
b. 1 long beep and 8 short beeps : VGA not detected