In the motherboard there is a small green LED(Light). It is located in the middle bottom of the DH67BL if it is fixed inside a tower case. check if it is glowing when your computer is connected to the electricity before press the front ON button if not, Then it is mostly likely a power supply issue try to replace it .Sometimes the LED is on but the computer will not start up (mini ATX motherbord). This is also a power supply issue(rarely motherboards). If you see the intel booting screen send me an other email explaining exactly what you see at booting process.For gaphic card DH67BL has a wonderfull and pwerfull Full HD 1080 build-in graphic card wth Dual Sreen capability and to arroud 1.2 Gbit shared memory. All you need a good Full HD monitor.maybe two of them using HDMI socket.