"DVI No Signal" when turning on monitor

Hello,

I just moved from NY to TX and after trying to set up my PC, it says "DVI No Signal" on my monitor when I turn it on. After that, the blue light on my monitor (power) turns orange as if it goes to sleep on its own. My PC light remains blue and seems fine. I have tried both video ports and I have made sure my RAM and everything inside of the PC is firmly in place. I can't seem to get any help from the cable guys and am out of ideas. Thanks for any advice.

I also just opened up my case again to make sure everything seemed to be working right and it seems so. My video card has its own fan that still works and the LED lights are on as well. I also learned that my monitor works with my PS3 with a DVI to HDMI cable, but still does not with my PC. Maybe the problem must be my PC or do I need to reset something? I really have no idea anymore...