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Windows 7: My laptop cannot detect external Monitor

20 May 2013   #1
legend101z

Windows 7 Ultimate x64
 
 
My laptop cannot detect external Monitor

Ok so i have Sager np9150 laptop with nvidia 670m 1.5gb ram graphic card and integrated Intel hd 4000.
the monitor im trying to connect to is a Lg Flattron wide 2000:1 digitial fine contrast with 5 ms response time. 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.

I don't think the cable is faulty since i try it on my desktop and extended to it and it work. I plug the HDMI into my gts250. but when i plug it on integrated card it did not work.


I've already try the fn+f key it doesn't work. i try another monitor and it work but i don't why this monitor wont work


My System SpecsSystem Spec
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20 May 2013   #2
TVeblen

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

Have you checked your Display Options?

With the monitor connected, right click on the desktop and choose Screen Resolution. In the window that opens you can (should) see two monitors, and options for using them.

If you don't see 2 monitors, the click the Detect button and see if it is recognized then.
My System SpecsSystem Spec
20 May 2013   #3
legend101z

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by TVeblen View Post
Have you checked your Display Options?

With the monitor connected, right click on the desktop and choose Screen Resolution. In the window that opens you can (should) see two monitors, and options for using them.

If you don't see 2 monitors, the click the Detect button and see if it is recognized then.
I've try that already it doesn't detect any. any other help?
My System SpecsSystem Spec
.

20 May 2013   #4
TVeblen

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

Well I'm only guessing now, but I wonder if the monitor needs to be in HDMI mode to get the signal. Can you switch the input modes on the monitor to see if one of the others will pick up the signal?
My System SpecsSystem Spec
20 May 2013   #5
legend101z

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by TVeblen View Post
Well I'm only guessing now, but I wonder if the monitor needs to be in HDMI mode to get the signal. Can you switch the input modes on the monitor to see if one of the others will pick up the signal?
well i ran some more test to see if if it was able to run in digital mode on my desktop , it work but I noticed the resolution was a lot lower on my desktop when i ran with dvi(max when i ran with vga) and when i check the resolution it say it on max and it also name my monitor a generic non-pnp monitor which is different when plug in with a vga cord. it say the monitor name on vga and run it on the max resoultion
My System SpecsSystem Spec
20 May 2013   #6
TVeblen

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

That sounds like some kind of communication problem due to the cable switching connectors. That non-pnp issue is probably due to there being no bi-directional communication through the cable. I don't think you can totally rule out the cable.

Why it works fine on the desktop but not on the laptop is confusing. I can only imagine that there is something unique about the laptop's configuration that would explain it. Perhaps you could go into the BIOS and disable one of the video chips (most likely the nVidia one) to test.
I would also look through the nVidia control panel carefully to look for settings that may explain the difference.
My System SpecsSystem Spec
20 May 2013   #7
legend101z

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by TVeblen View Post
That sounds like some kind of communication problem due to the cable switching connectors. That non-pnp issue is probably due to there being no bi-directional communication through the cable. I don't think you can totally rule out the cable.

Why it works fine on the desktop but not on the laptop is confusing. I can only imagine that there is something unique about the laptop's configuration that would explain it. Perhaps you could go into the BIOS and disable one of the video chips (most likely the nVidia one) to test.
I would also look through the nVidia control panel carefully to look for settings that may explain the difference.
my bios is quite limited there no where to disable my nvidia card.
My System SpecsSystem Spec
21 May 2013   #8
TVeblen

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

What happened when you changed modes on the monitor?
Did you find anything in the nVidia control panel?

Are you plugging the HDMI cable into the laptop while it is on or off. (Try it both ways)

Does your laptop have a VGA connection? Bottom line is that either your laptop or monitor just will not play nice with the HDMI to DVI cable. It could be due to a HDCP scheme problem in the laptop or the monitor, or it could be legacy hardware, or poor design. You may need to use a VGA to VGA cable for this PC.
My System SpecsSystem Spec
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 My laptop cannot detect external Monitor




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