External Monitor Not Getting Signal From Laptop

#1 shreena88

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Posted 17 May 2012 - 09:35 AM

Up until recently i've been using my laptop with an external monitor so that i can have two screens, but now suddenly the monitor doesn't receive a signal from my laptop when connected. The monitor is detected by my laptop, because when i go to the 'Screen Resolution' page there are two monitors. However if i try to extend the display, nothing happens on the external monitor. I also noticed that i can't adjust the resolution or orientation of the external monitor.

I've tried using the monitor with another laptop and it works fine. I've also tried using a different monitor with my laptop and the same thing happens, so it must be an issue with the laptop. Please help!

Thanks.

#2 LiveBrianD

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Posted 17 May 2012 - 11:24 AM

Try reinstalling the video driver for it.

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#3 compnovo

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Posted 18 May 2012 - 10:56 AM

shreena88, on 17 May 2012 - 09:35 AM, said:

On a Windows 7 PC if you press the Windows flag key + P it will rotate though the various display possibilities. Have you tried that? You might have clicked that key combination accidentally at one time.

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#4 mjd420nova

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Posted 18 May 2012 - 12:33 PM

A friend had a nice 19 inch LCD display that he was convinced had died. It had a red color to everything and unlike the CRT monitors, there was no way to adjust it. After I dug it out of his trash, I looked at the VGA connector and found a pin folded over and shorting to another pin. Thinking the worst, I located another connector to replace the old one. Before getting the soldering iron out, I tried to straighten the pin. Success, but I'm sure it won't stand up to being connected and disconnected too many times before the pin breaks off altogether. I inserted the connector to the server unit I have and it wotked fine, so it remains connected. This is not a common problem for most but those who connect and disconnect their displays, it is not that uncommon and care should be taken to prevent these types of faults.