HP Pavillion not recognizing external monitor.

hotrodsue

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Jan 16, 2014
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We have an HP Pavillion DV7-4080 US Entertainment Notebook, Windows 7 OS. We have previously used an external monitor with the laptop to have 2 screens to work from.

Now, the laptop is not displaying a picture on the external monitor. The external monitor is detected as if it has a signal, just no picture.

We have done the following:

Tested the external monitor on another computer, the monitor is alright.

Tested 3 different external monitors that are known to be working.

Worked in the Display Settings to choose "Extended Display".

Updated video drivers.

Tried both VGA and HDMI ports.

Any ideas on what we can try next?


 

hotrodsue

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Jan 16, 2014
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Thank you for your reply. There is a function key, and I forgot to mention we did that as well.

It is strange that from the laptop settings it recognizes the external monitor by name and model. That's why I say it seems to be communicating with the external as if there is a signal. We are NOT getting a "No Signal" error either. We just don't have a picture on the external.

We are stumped.
 

Rs_Computers___

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Jan 6, 2016
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I have the same issue with my HP G7 Laptop. I want to boot from external display as the internal is not working and I cannot get it right, even disconnected the Internal cables.
 
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