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When i press power button then no display on lcd/white screen

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1) When you power on ur pc?? do you get any display in beginning or when windows starts ti gones black.
2)If no display from the beginning??? try pressing caps or num lock key and see whether led on keyboards are blinks or not?
3)Do you get any beep sound when you try to power on??

Posted on Sep 10, 2010

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Posted on Jan 02, 2017

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White screen on hp w2007 LCD monitor.


Troubleshoot an HP LCD Monitor
HP makes a number of liquid crystal display, or LCD, monitors.
LCD monitors create an image by passing light through a liquid crystal solution that either blocks the light or allows it to pass through to a color filter.
LCD monitors are ideal for use with a computer as they present an excellent still image and cannot suffer pixel burn-in like other flat-screen display technologies.
Even quality monitors run into the occasional problem and need some basic troubleshooting before sending them in for service.
Check the power cord to make sure that it is plugged in securely to both the monitor and the outlet. If you are using a surge protector, remove it and plug the power cord directly into an outlet that you know is working.
Detach and reattach both ends of the cable running from your computer to your monitor.
If your HP LCD monitor has more than one connector, use the other one to make sure that the connector isn't the issue.
Remove any switch or extension cable that may be present between the computer and the monitor.


Restart your computer. A fresh start will correct many software issues.


Check the documentation of your video card to make sure that it supports HDCP, or High Bandwidth Digital Content Protection, since the screen may be blank when you are trying to watch high-definition content through a video card that doesn't support it.
Some older HP LCD monitors also do not support HDCP, so check your monitor documentation as well.


Go to your video card manufacturer's website and install the latest drivers for your video card. Instructions for installing the drivers will vary by manufacturer, but they should be listed with the driver software.


Change your resolution to a preset video mode to make sure that you aren't trying to operate the monitor in an unsupported resolution.
Different models of HP LCD monitors support different preset video modes.
All of the preset video modes for your monitor are listed in your monitor's manual.
Resolutions of 1024 x 768 and lower are supported by almost all HP LCD monitors.


Press the "Auto/Select" button on the front of the HP LCD monitor to correct any images that are dark or blurry.
If this does not correct the image, press the "Menu" button on the front of the monitor to bring up the on-screen display menu, where you can use the "+" and "-" buttons to scroll through the options and "Enter" to select the option that you want to change.
Adjust the brightness and contrast as needed by selecting them and using the "+" and "-" keys. Press the "Menu" button to exit the menu.


Press the "Menu" button to enter the menu, scroll to "Image Control" and press "Enter."
From here you can choose the "Auto-Adjustment" option and the HP LCD monitor will automatically adjust the horizontal and vertical positioning to center the screen.
The ability to adjust these settings is available only if you are using VGA inputs.


Contact your retailer or manufacturer for any additional troubleshooting steps for your particular model of HP LCD monitor.
If your monitor still has issues, you may need to send it in to be serviced.
HP Support

http://welcome.hp.com/country/us/en/support.html

Fix a White Screen on an LCD Monitor
When an LCD screen has turned completely white, there are three normal causes: the screen is defective, the video cable is not connected correctly, or the graphics card on the motherboard of the computer is faulty.

You will need to troubleshoot these possibilities to determine which problem you have.
If you are not experienced in working on computer equipment, you should not attempt to disassemble your LCD screen because you could easily damage it.
Seek professional assistance unless you have experience working on computer hardware.

Disconnect the white LCD screen from the computer by unscrewing the blue monitor cable. Connect the working LCD screen to your computer by attaching its blue monitor cable to the same slot.
If your computer display does not show on the functioning LCD screen, try rebooting your computer.
If it still does not display, the problem is with your computer's graphic card on the motherboard. Seek professional repair assistance.
If your computer display shows normally on the working LCD screen, proceed to Step 2.
Unplug the LCD monitor with the white screen.
Disassemble the rear panel of the monitor with the small screwdriver.
Carefully separate the screws into piles so that you can keep track of how to reassemble the monitor.

Locate the internal video cable, a gray cable with a plug on the end that connects to the main components of the screen.
See the References section for photos of the video cable for assistance.
http://www.laptoprepair101.com/laptop/2008/04/13/laptop-lcd-screen-turned-white/
Unplug the cable, checking for any debris or blockage.
Reconnect the cable firmly.
Reassemble the LCD screen. Plug it in and connect it to your computer.
If the screen is still white, you have a defective LCD screen.
You will need to replace it or take it to a professional repair service for assistance.




Without this test you'll have to guess because as I mentioned before this could either bad motherboard or bad LCD screen.
You'll have to disconnect the video cable from the LCD screen (connector 2) and the inverter board (connectors 3 and 1).
After that you connect another working screen and test video.
For this purpose I'm using one of my test LCD screens.
My test screen is cracked and because of that you see a wide white band in the center but it still works fine for this test.
The original screen is white but my test screen works normal (except the crack of course) and I can see the image.

After this test I can tell that the problem must be related to the screen.
After I assembled everything back together and connected the original LCD, it's still white.
CONCLUSION. In my case this problem is related to the LCD screen and it has to be replaced.

Aug 04, 2013 | HP W2007 20.1 Widescreen Monitor

Tip

ERROR CODE AND POWER SUPPLY CIRCUIT


Viewing the Self Check Diagnostic List
1. TV must be in standby mode. (Power off).
2. Press the following buttons on the Remote Commander within a second of each other:DISPLAY > Channel 5 > Volume - > TV POWER .
Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a "0".
NOTE: If the Service Menu display text is not completely visible, press the Menu HOME button on the Remote Commander to refresh the display.
3. To exit Self Check display, turn the power off. Press [Menu] Exit.
Clearing the Self Check Diagnostic List
1. In Service Mode, press the Channel 8 Channel 0 .

RESETTING TO FACTORY DEFAULTSUse the following instructions to restore the User Controls and
Channel Memory settings to the preset factory conditions.1. While holding down the UP ARROW on the Remote Commander, press the POWER button on the right side of the set.The set restarts and displays the initial setup screen. This may take several minutes.
White Balance adjustment
1. Allow approximately 30 minutes for the set to warm up before proceeding with the white balance adjustment.
2. Connect the signal source to the 3 terminals of the Component In input (Y/Pb/Pr).
3. Set the Picture Mode to "VIVID" in the user menu.
4. Select the Component In input.
5. Open the Factory Service Menu (see section 3-1.) and select "Service Alignments Menu".
6. Set "White Point Red", "White Point Green", "White Point Blue" and "Black Level Offset Red", "Black Level Offset
Green", "Black Level Offset Blue" to average values .
"Cool " White Balance Adjustment
1. Select "COOL" from Color Tone in Service Alignments Menu.
2. Input 70IRE full white pattern signal into Component In.
3. Adjust "White Point Red", "White Point Green", "White Point Blue" in Service Alignments Menu if needed.
4. Input 25IRE full white pattern signal into Component In.
5. Adjust "Black Level Offset Red", "Black Level Offset Green", "Black Level Offset Blue" in Service Alignments Menu if needed.
6. Repeat steps 2 to 5 to achieve desired White Balance.
FOR MORE DETAILS CHECK THE FOLLOWING LINK
www.electro-medical.blogspot.com
google.com/+AjinGopakumar

USE SEARCH TAB TO FIND MODELS OR USE THE DROP DOWN MENU

on Jun 30, 2015 | Sony Bravia L-series Kdl-32l5000 32-inch...

Tip

SERVICE MODE AND ERROR CODES CHECK


Viewing the Self Check Diagnostic List
1. TV must be in standby mode. (Power off).
2. Press the following buttons on the Remote Commander within a second of each other:DISPLAY > Channel 5 > Volume - > TV POWER .
Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a "0".
NOTE: If the Service Menu display text is not completely visible, press the Menu HOME button on the Remote Commander to refresh the display.
3. To exit Self Check display, turn the power off. Press [Menu] Exit.
Clearing the Self Check Diagnostic List
1. In Service Mode, press the Channel 8 Channel 0 .

RESETTING TO FACTORY DEFAULTSUse the following instructions to restore the User Controls and
Channel Memory settings to the preset factory conditions.1. While holding down the UP ARROW on the Remote Commander, press the POWER button on the right side of the set.The set restarts and displays the initial setup screen. This may take several minutes.
White Balance adjustment
1. Allow approximately 30 minutes for the set to warm up before proceeding with the white balance adjustment.
2. Connect the signal source to the 3 terminals of the Component In input (Y/Pb/Pr).
3. Set the Picture Mode to "VIVID" in the user menu.
4. Select the Component In input.
5. Open the Factory Service Menu (see section 3-1.) and select "Service Alignments Menu".
6. Set "White Point Red", "White Point Green", "White Point Blue" and "Black Level Offset Red", "Black Level Offset
Green", "Black Level Offset Blue" to average values .
"Cool " White Balance Adjustment
1. Select "COOL" from Color Tone in Service Alignments Menu.
2. Input 70IRE full white pattern signal into Component In.
3. Adjust "White Point Red", "White Point Green", "White Point Blue" in Service Alignments Menu if needed.
4. Input 25IRE full white pattern signal into Component In.
5. Adjust "Black Level Offset Red", "Black Level Offset Green", "Black Level Offset Blue" in Service Alignments Menu if needed.
6. Repeat steps 2 to 5 to achieve desired White Balance.
FOR MORE DETAILS CHECK THE FOLLOWING LINK

www.electro-medical.blogspot.com
google.com/+AjinGopakumar

USE SEARCH TAB TO FIND MODELS OR USE THE DROP DOWN MENU

on Jun 30, 2015 | Sony Bravia KDL-26L5000 26 in. LCD HDTV

1 Answer

White screen


The white screen you are getting is it just right after turning on the computer? If yes it means that you were not able to see the Dell logo correct?

Try connecting an external monitor thru VGA. While monitor and laptop is on with white screen please do this. Hold down Fn key then press F8 at the same time. This will toggle the display from the laptop to external monitor. If laptop displays to external monitor means that laptop LCD needs to be replaced.

If you do not have an external monitor try this.
While laptop is OFF. Do this. Hold down the D key then press power button at the same time.
Check if the laptop will display colors the whole screen. If you still see white screen then LCD needs replacement.

LCD mean LCD panel or the whole screen together with LCD cable and Inverter.

Hope this helps.

Mar 25, 2011 | Dell Inspiron 1525 Notebook

1 Answer

The display on my inspiron 6000 in jumpy at the bottom 1/3 of the screen. no evidence of any damage to case or screen. Just started with a black line and now jumps around and has white lines in the bottom....


Hi,
Generally the problem is caused due bad LCD inverter cable. Kindly run the LCD diagnostics
How to Run diagnostics
1. Shut down the computer
2. Disconnect the AC adapter and Battery
3. Press the power button for 10 sec.
4. reconnect both AC adapter and battery
5. Press FN key+ power button
6. Follow the screen prompts.

If the LCD problem is shown in diagnostics your screen would have to be replaced.

Thanks for using Fixya
proton

Jul 27, 2009 | Computers & Internet

Tip

Dell Laptops (Has power no display issues) 1. Immediately run PSA. (Make sure...


Dell Laptops (Has power no display issues)

1. Immediately run PSA. (Make sure laptop is connected to AC Adapter. Leave laptop off. Press and hold on the Fn key then press power button once).

2. Just wait for about 3 to 5 minutes then you might will hear beeping sounds (no display with beeping sounds) this means that laptop is working fine but no display. This might cause by either the video card or LCD.

3. After hearing beeps turn off laptop. (Press and hold on the power button for about 3 seconds)

4. Leave laptop off. Press and hold on the D key then press power button once. If full screen colors appears this means LCD is working fine and the problem is the video card. If no display from the LCD no colors were displayed try the test again just to make sure. If still the same no full screen colors then the problem is the LCD.

on Dec 03, 2009 | Computers & Internet

1 Answer

I have a Dell Inspiron 9300


if there is white line in the middle of the screen then first of all turn off the laptop and disconnect the ac adaptor and take out the battery and press and hold down the power button without the power cord and the battery for one minute and then turn on the computer with power cord and the battery and then check it out and still after that if u get it then check it out with the external monitor and if u get a good display in the external monitor then replace the lcd,but make sure that the screen is not broken from inside which u cannot touch and feel it.and if u get a good display in the external monitor then definately replace the lcd screen....good luck

thanks

Dec 27, 2008 | Compaq Presario M2000 Notebook

3 Answers

Doesn't start


hi, if ur screen turns white, it could be any problem starting from ur LCD to motherboard or as u said a virus. to assist u in a right way i need to know what exactly is happening between that short duration between pressing the button and white screen. most importantly is anything else comming up on the screen before the white screen.
cheers

Oct 12, 2008 | HP OmniBook 500 Notebook

5 Answers

Philips 150B4 White Screen with the word Aging...


I have a philips 19 lcd. the damn thing just display a white screen with the word aging in red in the certer. it goes off after a while, turn black a while then comes back again, with the white screen. keeps doing it over and over.

anybody have any idea?
i tried caps, but all the caps look good.
to be noted i didnt change all.

Apr 20, 2008 | Computers & Internet

1 Answer

Philips 170S4 white screen not display.


its in the power suppy section,most of the lcd monitor has this problem,try to check the capacitor electrolytic or replace all th 16v capacitor

Apr 03, 2008 | Gateway FPD2275W LCD Monitor

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