Question about Cornea CT1503T 15 in. LCD Television

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Using LCD as HP laptop monitor

I have an HP laptop and bought a docking station that I am trying to connect the Cornea LCD as the moitor, but it is as if the monitor does not recognize the connection. I went to Menu, select input sign and chose PC but the monitor just goes into Sleep mode. Can you help?

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  • newHP2007ma Nov 19, 2007

    The F4 key has a monitor picture on it. When I hit Function and F4 together the monitor, light turns green but then says "Power Saving mode" and goes back to orange. Is there something else I should be doing?

  • newHP2007ma Nov 19, 2007

    It still does not seem to be working. I only have a VGA cable connected to the monitor...should I be using any Video type cables?

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There is a key on your laptop keyboard that will allow you to switch from built in to external monitor. you need to hit the function key and this one at the same time, this will fix that for you.

(I don't remember which key it is, but it's at near the top left.)

Posted on Nov 18, 2007

  • Mykul Archambault Nov 19, 2007

    Have you checked the monitor cable? Usually this happens when the cable is not plugged in all the way. (The green light is the monitor sending a signal, the orange comes on when it can't find it.

    Usually when I see this error, it's because the plug is loose at the monitor end.

  • Mykul Archambault Nov 19, 2007

    Try connecting the monitor to the laptop WITHOUT using the docking station. Does it turn on or does it have the same issue?

    You said that you went into the menu, do you mean the display properties menu?

    If not, right click on the desktop and pick 'properties', then pick 'display' and enable the second monitor.

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My screen goes dark when I use my laptop. I have a docking station with monitor and the machine works fine. However when I undock or start up with just the laptop the screen goes black. I can still see...


Hi wilhejl,

I see that you are experiencing a video issue with you back light on this case,
you mentioned when docked on your docking station you see the video on you monitor but when undocked you get a black LCD screen and see shadows of what is on the LCD screen.

this is a back light issue that you are experiencing.

We can try and check some settings regarding this concern and se if there is anything we can do to correct what you are experiencing with your laptop

As soon as you turn your Laptop on keep on tapping F1 to will bring you to the BIOS screen if the BIOS shows up on you LCD screen without going black then most probably yo may need to change some settings in windows regarding the the LCD and power options.

  • Try docking back into your docking station and inside windows go to power options, and set your system power options to balanced.
  • On your Desktop right click anywhere on an open space to get the menu list click on personalize then click on display then click on advance settings, look for screen refresh rate change it to 59Hrtz then undock from your docking station and try booting into windows without using the docking station to check if the video will show on the LCD again on this issue.
I hope that this can help regarding your case,

Have a nice day.

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1 Answer

Screen is blank; can not see image with computer on


STEP: Toggle the Video Mode with the <Fn> and <F8> Keys
Additional Information
Press the <Fn> and <F8> keys to toggle the display mode between the video modes (LCD Only, Monitor Only, and Both).
STEP: Determine if an external monitor is being used.
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STEP: Determine if the video problem occurs outside of the docking station.
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STEP: Remove Any Docking Stations or Port Replicators From the Computer
STEP: Unplug All Accessories From the Laptop Computer
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