LCD Monitor

[MrDas]

HELP. I know I'm not in the right forum but I need help. I built and powered up my new system but my 19" monitor is not powering up when the system comes on. Could my video cards be bad? or am I overlooking something?

Thermaltake Shark tower
ASUS A8N motherboard
Nvidia SLI dual video cards 6600 GT
Creative Labs sound card
Ultra 600 watt power supply

 

[MrDas]

YES to all the questions. I double checked everything.

 

[MrDas]

I tried all 4 DVI slots. The only thing I can think of is the cards are bad.