Question about Microsoft Windows Vista Ultimate Edition

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Flickering LCD TV monitor

Whenever I tried to connect the VGA cable to the external TV (a 37"LCD), the notebook screen blanked out and the external TV in PC mode will start to flicker.

This is despite the settings on the Control Panel/ Personalisation/ Display Setting. I was not able to "extend desktop to this monitor", no matter how I "Apply" or "OK".

Any advice out there?

Thanks very much in advance.

Posted by on

  • wai68 Nov 30, 2008

    BTW Mine is the MS Windows Vista Business.

  • wai68 Dec 21, 2008

    Thank you for replying, juremeh.

    The refresh rate is set on default and so I'm unable to change.

    It seems that this happened after I installed the MPlayer and changed the settings to make the LCD Monitor as primary.

    Now whenever I plug-in the VGA cable to the external monitor, the external monitor takes over from my laptop, regardless of the fact that what the settings are set.

    I do not have any problems when I extend the monitor to my 19" LCD though.

    What do you think?

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Hello. you have to set refresh rates differntly on tv and on monitor. the flickering appears usually if the frequency is too low. hope i helped you. 

Posted on Nov 30, 2008

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http://en.wikipedia.org/wiki/VGA_Connector

Scroll down a little for an example of a VGA Cable.

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Yes. You can also connect an HDMI cable to it, and HDTV with this capability.

Turn the monitor on. If a CRT type allow it to warm up.
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If not;
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The flickering could be a sign that your lcd screen is going bad and needs to be replaced. It could also be the video card inside the computer. Isolate the problem by connecting another monitor to the laptop. Borrow a monitor from a neighbor, friend, relative or co-worker and connect it to the laptop. If the Borrowed monitor displays ok without flickering, then your video card inside the computer is good, but your lcd screen is bad. If the Borrowed monitor flickers like your lcd screen did, then your video card inside the computer is bad.

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Try tapping the back of the lcd screen's lid to see if the flickering stops, increases or decreases. It might be that the lcd cable located at the top on the back of the lcd screen is loose.Isolate the problem by connecting another monitor to the computer. You'll have to take the lcd apart to get to the video cable on the back of it.

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Screen blank with white dot


Problem with;

1) Video cable:

A) Video cable connection on motherboard side is loose, and/or on back of LCD screen.

B) Video cable is damaged.

2) screen Inverter:

screen Inverter is bad.

3) LCD screen:

LCD screen is bad.

4) Graphics chipset:

Graphics chipset is bad.

Suggest you connect a VGA monitor to the VGA port (Connector) on your laptop.
See if the problem is the graphics chipset, Or video cable, Or display assembly.

You didn't state what manufacturer and Model Number of laptop this is.
All I can do is state generic information.

This is an example of a VGA Cable, and VGA connector,

http://en.wikipedia.org/wiki/VGA_connector

The VGA connector will be on the side, or back of your laptop.
For the VGA monitor you can use a CRT type monitor, (Looks like a small TV), or a flat LCD screen monitor that has a VGA cable.

Laptop OFF, monitor OFF, connect the external VGA monitor to the laptop.
Turn the monitor on. If a CRT type allow it to warm up.

Turn the laptop on.
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IF not;

There are at least 3 display options.
1) Laptop internal monitor ONLY
2) Laptop internal monitor AND external VGA monitor
3) External VGA monitor ONLY

Press, and hold down on the Fn key, and at the same time tap once on the Display Toggle-Over key.
(For an example HP's usually use the F4 key for a Display Toggle-Over key)

Display shows the same on the external VGA monitor?
You have a bad graphics chipset.

[ Some laptops have been erroneously stated as having a graphics card, when in fact they do not.
The GPU (Graphics Processing Unit) is soldered directly to the motherboard.
This is Integrated Graphics.

http://en.wikipedia.org/wiki/GPU

There is no changeable, replaceable graphics card. Therefore the solution is motherboard replacement ]

IF, the display is good on the external monitor, you have a problem with the Video Cable, and/or in the Display Assembly.

After diagnosing with an external VGA monitor, post back in a Comment.
Also post the manufacturer name, and model number of the laptop.

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Keyboard lights up screen stays black....after inserting recovery disk screen still remains black...


Would like you to attach an external monitor for a diagnoses.

A VGA monitor.
Can be a CRT monitor that resembles a small TV, or a flat LCD screen monitor, that has a VGA cable attached,

http://en.wikipedia.org/wiki/VGA_connector

1) Laptop OFF, monitor OFF, attach the VGA cable of the monitor to the laptop's VGA connector.

[For the HP Pavilion dv6000z Notebook PC, the VGA connector is on the Left side at the Rear. Second port from the rear. 15 pins.
3 rows of 5]

2) Turn the monitor on. If a CRT style allow it to warm up.
3) Turn the laptop on.

By default the display should show on the external VGA monitor.

If not, press, and hold down on the FN key,
(Second key from the left, on the Bottom row on the Keyboard),
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(Top of Keyboard towards the left)

Still no? Hold the Fn key down again, and at the same time tap on the F4 key.

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1) Internal monitor of laptop ONLY
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More on that in a moment.

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More specifically it isn't actually the graphics chipset itself, but the mounting of the graphics chipset to the motherboard.
More on this in a moment.

External VGA monitor shows a good display;
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On one end, the video cable is plugged into the motherboard.

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The video cable routed from the connection on the motherboard, up under the left Hinge Cover, and into the Display Assembly, where it then attaches to the Back of the LCD screen.

THIS connection must be checked also.

{ Just gave advice similar to this earlier. The asker's problem turned out to be a loose video cable connection, on the back of the LCD screen }

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Primer:
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The Backlight is a CCFL for an HP Pavilion dv6000z Notebook PC.
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90 PERCENT OF THE TIME the fault is a bad screen Inverter.

Example of a screen Inverter for a Pavilion dv6000z Notebook PC,

http://www.nylaptopparts.com/index.php?main_page=product_info&products_id=560

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http://www.insidemylaptop.com/remove-replace-lcd-screen-inverter-hp-pavilion-dv6000-laptop/

http://www.insidemylaptop.com/take-apart-hp-pavilion-dv6000-laptop/

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steve_con_5.gif

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