Question about HP Pavilion dv9000z Notebook

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Power on but no display internal or external

I have had the exact same problem, all the blue lights comne on, but nothing on the screen. Sent it's circuit level solution then i can fix it. also i m a diploma eng, so give me a tips plz for the fix about this problem.


s_m_fagun

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REMOVE THE RAMs FROM UR LAPTOP. IF THEY ARE TWO IN QUANTITY THEN PLUG IN ONE RAM AND CHEK DISPLAY,

Posted on Sep 12, 2009

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My hp Compaq min 110 has a screen display problem, one can turn it on but the screen responds nothing....


If all is normal with an external display, consider replacing the internal display/inverter.

Mar 07, 2016 | HP Computers & Internet

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My Acer Aspire One has half a good screen and half a black screen. Everything seems to be working as long as you only use the left half of the screen.


Power it up with an external monitor connected. If you get a full display on the external monitor, this confirms you have a problem with the built-in screen or the built-in lead connecting it to the motherboard, and not an item like the motherboard or built-in graphics chip (which are used regardless, whether image is sent to the internal screen or external monitor). The internal screen can be replaced, but before doing that, I'd suggest checking that the internal lead from the motherboard to the screen is intact and secure. Unfortunately, this entails some disassembly, which most home users would not be comfortable with.

Nov 12, 2017 | Acer Aspire One 521 532H 533 D260 NAV50...

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When I turn on my HP Pavilion 1x1000 It stays on ,but there is no image on the screen, and stays on please help.


A) Post THE Product Number on the bottom of the laptop. It's in the white Service Tag. P/N = Product Number.

B) On the left/bottom side of the LCD screen frame (Display Bezel), there is a switch. Looks like a small button.

This is the Internal Display Switch. (May not be in this exact position for your model. Look around on the Display Bezel, that surrounds the LCD screen)

When the laptop is closed, the switch turns off the display, (Image on screen), with the computer still on.
Tap it a couple of times lightly, with the eraser on the end of a number 2 pencil.

See if anything happens. That switch may be bad.

C) Laptop off, monitor off, connect a VGA monitor to the VGA port on the laptop.

Example of a VGA cable, and VGA connector, (Port),

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

You can use a CRT monitor, (Looks like a small TV), or a flat LCD screen monitor if it has a VGA cable.

C) Turn the monitor on. If a CRT type of monitor allow it to warm up.
Turn the laptop on.

By factory default settings, the display should show on the external VGA monitor.

IF not;
There are at least 3 display options,

1) Internal monitor of laptop ONLY
2) Internal monitor AND external VGA monitor
3) External VGA monitor ONLY

Press, and hold down on the Fn key. At the same time tap once on the Display Toggle-Over key.

Don't know what exact HP laptop you have. For most HP's it is the F2 key, or the F4 key, that is the Display Toggle-Over key.
(Key has an empty rectangle on it, with a vertical line on each side)

Still no display on the external VGA monitor?
Hold the Fn key down again. (Bottom left of Keyboard)
Tap once more on the Display Toggle-Over key

NO display on the external VGA monitor, means you have a bad graphics chipset.

(By using an external VGA monitor, you are bypassing the Internal Display Switch, and the Display Assembly. (Internal monitor of laptop)

If you have a display on the external VGA monitor, you have a problem with;

1) Video Cable, (Display Panel Cable for HP)
or
2) Display Assembly

Post back with your results, and if you have a display on the external VGA monitor, we will go on.

If you do not have a display on the external VGA monitor, you are looking at motherboard replacement.

Post back in a Comment.

Regards,
joecoolvette


May 13, 2012 | HP Computers & Internet

1 Answer

My toshiba laptop will boot when I power up but the screen stays black


Jeff, connect an external monitor for a diagnostic test.

Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port on the back of the laptop,
(RGB/Monitor connector,

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

The external/VGA monitor can be a CRT type (Looks like a small TV), or a flat LCD screen that has a VGA cable.

Turn the external monitor on. If a CRT type allow it to warm up.
Turn the laptop on.

By default the display should show on the external monitor. If not press, and hold down on the Fn key, and tap the F5 key. (One of the Hot Key's)

If the display still does not show, hold down on the Fn key, and tap the F5 key again.
There are three display options;

1) Internal monitor of laptop ONLY
2) Internal monitor of laptop AND external monitor
3) External monitor ONLY

If graphics show on the external monitor, you have a problem in the Display Assembly, and/or the Video Cable.

If graphics do Not show on the external monitor, you have a problem with the graphics chipset on the motherboard.
(ATI Radeon 3100)

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-Pro-L450-L455/laptop-disassembly-1.htm

Video Cable
1) Could be the connections. The connection of the video cable TO the motherboard, and the other end of the video cable TO the back of the LCD screen. (In the Display Assembly)

2) Could be damage to the video cable. Check the sheath of the cable for obvious signs of damage. If so, the thin tiny wires inside may be damaged also.

Cable should be checked for continuity of each wire in the cable. (Ohm's with a multimeter)

Video Cable condition, and tightness of connections check out, it's on to the screen Inverter.

Primer:
An LCD screen does not produce light by itself. It needs an additional light source.
A Backlight is the additional light source.

A Backlight is a CCFL, or a series of LED lights.

The Toshiba Satellite L455D-S5976 Notebook PC, uses 1 single CCFL for a Backlight.
Cold Cathode Fluorescent Lamp.

Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.

A screen Inverter is used to convert the power (Electricity) from the laptop, for the LCD screen, and Backlight.

90 PERCENT OF THE TIME the fault is the Inverter.

The screen Inverter is a small rectangular circuit board, and is located behind the Display Bezel, an at the bottom of the LCD screen,

Example of screen Inverter,

http://www.battery-stores.co.uk/laptop-inverter.php/toshiba_Satellite+L455D-S5976_205_5226.htm

Link to a free Service Manual for the Toshiba Satellite L455D series of Notebook PC's,

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-toshiba

Under the main Toshiba heading go down to the subheading -
Satellite A10. (A10 is in blue)
In this 'paragraph' go down to the third line, and scroll across to -
L450D, in blue.
Click on L450D.

This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
After you click on the file name { L450D } it may take up to 30 seconds before the first page comes up.

Would appreciate it if you would post back in a Comment with your findings.
Regards,
joecoolvette

Jan 15, 2012 | Toshiba Satellite L455D-S5976 Notebook

1 Answer

My samsung laptop has a screen problem coz its screen turns to white(nothing you can see) then I connect the power supply (adaptor) I did also use the system recovery cd but the problem still not solved,...


Hello:

This is a hardware problem.
1.- Try to connect an external LCD screen (like a T.V) or CRT monitor using a HD15 VGA cable, switch to the external screen. You should use Fn + F5 to switch between screens. (See your Samsung keyboard for exact key combination). If image comes out, your motherboard has no problem.

2.- The internal cable connection to the mainboard may be loose. You need to take apart the display panel to check it out.

3.- If you can see light on the lcd screen, that means your lcd inverter works fine, so, the lcd screen is damaged. You must replace the lcd screen.

4.- If you can't see any light on your screen, your screen inverter needs to be replaced.

I hope this helps. Thanks

Feb 08, 2011 | Samsung NC10-14GW Notebook

1 Answer

When i turn the notebook on i can see nothing blank black screen


Sounds like one of two issues,

1. You have the internal display turned off. When you turn the laptop on you should hear a single beep. Do you see the Sony Logo during bootup? Have you tried to turn the display back on? Try pressing the Fn+F7, or Fn+F8, key combination. There are only three modes and these key combinations allow you to cycle through these modes. Either the Primary Screen is on, or the External Screen is on, or both are on.

2. You may have a bad video card or the screen is dead. When you power up the laptop, can you see a glow, but the screen is black? Can you see the Bootup Screen with the Sony Logo, but barely? Have you tried to connect an external monitor to the laptop to see if the video card is working? If you get video to the external monitor, the video card is working. If you don't, then the video card may be bad. If you are getting video on the external monitor, try using the key combinations listed above and try to cycle through your Internal/External display modes.If nothing shows up on the laptop display then the LCD screen may be bad. It could be the back light. Those are internal to the LCD. That means you will have to replace the entire LCD display on the laptop.

Hope that helps.

Nov 07, 2010 | Sony VAIO GRZ610 Notebook

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Laptop has been sitting for awhile. I bought a


Should run just off adapter. Have you hooked an external screen to it to see if its the display.

Dec 14, 2009 | Toshiba Satellite M35X-S161 Notebook

1 Answer

Screen stays black on startup of toshiba satellite L300


have you tried either switching between external and internal monitor usally Fn + F5 on toshiba or try plugging a monitor into the back and see if it displays.
if you get a display on the external monitor then its probably a screen or inverter fault if you donot get a display to an external screen then it is likley t be the graphics on the board itself.
hope this helps

Feb 22, 2009 | Toshiba Satellite Pro L300-EZ1501 Notebook

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HP DV2000 screen going blank when try to restart my laptop


Check the swapping monitor function screen FN + F4 on Compaq.
It allows to change from internal to external or Both monitors.OR
Start in Safe mode with VGA basic settings and configure your Display settings.

Dec 14, 2008 | HP Pavilion dv6000z Notebook

1 Answer

I have a problem using the external screen on my acer 5315


I'm assuming you mean you get no picture on the external monitor.

Most laptops have a blue "function" key. some of the other keys have additional functions when this blue key is pressed as well; one of them is to change the display usage. Usually, this can be:
* Internal only
* external only
* internal & external showing same picture
* internal & external as extended desktop
Repeated pressing of the relevant key will cycle round the available display modes. Once you find the one you want, you may have to adjust Windows display options - right click on the desktop and click "properties" then go to the Settings tab.

Jul 21, 2008 | Computers & Internet

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