My laptop cannot find external monitor

[legend101z]

OK so I have Sager np9150 Gaming laptop with nvidia 670m 1.5gb ram graphic card and integrated intel hd 4000.

the monitor I'm trying to connect to is a Lg Flattron wide. I bought a hdmi to dvi adapter cable so that I can hook the hdmi side to my laptop and the dvi side to my monitor since it doesn't have a hdmi slot.

before plugging the hdmi side into the laptop my monitor say check signal cable. when I plug the hdmi side into my laptop the check signal cable disappear and it say digital power saving and then it stay in that mode.

 

[St1ckM4n]

Right-click on your desktop, click Screen resolution, set to Extend these displays.

 

[legend101z]

It won't even find my monitor. I try another monitor and hook it up and it work fine. I have no idea why this one not working.

 

[St1ckM4n]

Is there a video input selector on your monitor?

 

[compfixing]

Press Windows+P

 

[legend101z]

Press Windows+P

I've try that and also try using the source button on my monitor. nothing work