Monitor Asleep

I finished building my new rig, and everything works fine, except that when I turn on the computer, the monitor does not turn on.

I have a Hyundai L90D+ 19" LCD. The gfx card is EVGA GTX 260. The monitor works just fine with my old computer.

I cannot even manually turn on the monitor. The damn thing just wouldn't turn on.

Everything else runs fine, because I can hear the OS loading and the audio feedback is fine.

Every ten boots, the monitor would turn on.

I changed all sorts of settings on BIOS, but nothing works.

Any ideas?