Question about Compaq HP Compaq510 511 515 516 Keyboard Cover Skin

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While using my laptop, suddenly the display gets blank... but the laptop is still running... and while pressing the bottom of the screen again the display is on... but the laptop neither gets restart

Serial No.= CNU0040SQZ Model= CPQ510UT5870Q4X250NIBNCN22Fa

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Loose connection cable between the motherboard and the display screen. Take it to a professional, to get it fixed.

Posted on Mar 14, 2014

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I have a dell studio 1558 laptop, suddenly while using the laptop the screen for blank so i did a hard shutdown. After that i tried starting my laptop, but there was only blank screen. I attached my...


Seems like a two fold issue here. The blank screen is possibly a faulty laptop display or inverter but the blue screen is caused by powering off the laptop whilst it was doing something and now has damaged files. With your external monitor connected power up and try to reach Safe Mode and let windows find the issue and attempt a repair or press F8 and select repair OS. When you have repaired the OS, shine a bright light at the laptop screen and see if the inverter is not running or a dead screen.

Oct 28, 2014 | Computers & Internet

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Laptop is run and start but no display


There are several reasons that your Toshiba laptop screen may not come on, even if the laptop appears to be running, and several options you may try to get your screen back up and running without an expensive service call.


Common causes for a blank screen include a backlight that is turned off, a display toggled to an external monitor and improper shutdown errors.


To avoid blank screen errors after your current error is fixed, make sure to follow all instructions in your user's guide to care for your Toshiba computer.


Shine a flashlight directly at your screen and look for an image.

If you see one, this means the backlight on your laptop is off but the screen is still working. This backlight normally turns off only when your screen is closed.


Look for a small metal or plastic pin near one of the screen hinges.

The screen pushes this pin in when it is closed, so if the pin is stuck in the screen closed position, the backlight will remain off.


Tap the pin several times to release it.

You may need to use a small object, such as a pencil tip or straightened paper clip, to reach it on some models.


Monitor Toggle


Press and hold down the "Fn" key if you do not see an image when you use the flashlight.

Tap the "F5" key several times while the "Fn" key is pressed.


This will cycle your screen through the various options that toggle the display to an external monitor.


Attach an external monitor, restart the computer and try this method again if no image appears on the laptop screen.


Click "Start," "Control panel," "Hardware and sound," then "Device manager" using the external monitor if you get an image there but cannot toggle the image back to your LCD.


Select the "Monitor" option to expand your selection and select your LCD monitor from the device list.


Click the "Driver" tab and select "Update" to update the driver, as this error is likely caused by a software driver error.


Force Restart


Press and hold the power button until the computer shuts down completely.

Check the indicator lights at the edge of your laptop to see if the computer is truly off or if it has simply gone into hibernation mode.


If it is off, all lights will be off except the battery-related lights if you have a charger plugged in. In hibernation mode, the power light will blink slowly.


Press the power button to restart the computer again after leaving it off for 15 to 20 seconds. This may fix the problem.


If the blank screen returns or you get a flash of images and then a blank screen, move on to the next step.


Force Power Down


Unplug your laptop from the power source.

Remove the battery by pressing outward on the battery latch and pulling the battery unit completely out of the computer.


Press the power button several times to completely discharge the computer.

Replace the battery and plug the computer back in after about 30 seconds.


Press the power button to turn on the computer.

If you get an error screen upon startup, choose to restart Windows normally.


This error is caused by improper shutdown procedures.


Hope this helps




Oct 22, 2012 | Toshiba Satellite A500-ST5608 Laptop DC...

1 Answer

Acer 4320 Screen turn blank when it load Windows.


press fn button and with up-arrow increase brightness ,,, in windows open display settings by right clicking on the desktop (intel or nvidia properties ) acer 4320 could have nvidia or intel ... increase the brightness and the contrast or load the default settings ,,, use external monitor if need ...

Mar 07, 2012 | Acer TravelMate 4320 Notebook

2 Answers

HP Pavilion laptop screen has gone black/blank


You can either use an external monitor for working with the laptop or talk to HP for replacement.

The best option is to use external monitor to backup data before sending it to replacement.

Good luck

Jun 22, 2009 | HP Pavilion dv6835nr Notebook

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HP Pavilion laptop screen has gone black/blank


No it suggests you have a bad screen and it needs replaced

Jun 22, 2009 | HP Pavilion F1503 15" LCD Flat Panel...

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How do i change the graphic display to my notebook when its currently set to a remote source. I turn the computer on and get no display at all, only a blank screen.


If by "remote source" you mean that you had a TV or external monitor connected to it at one point, your laptop has function keys that toggle these settings. You should have a function key (usually labeled Fn) in a different color on your keyboard near the bottom. Along your F-keys (F1-F12) you'll see some purple or blue symbols, one may look like two monitors or two rectangles separated by a line. With the laptop on and running, press and HOLD the Function Key, then press the monitor toggle key. If it doesn't work immediately, give it a second and press it again. Many laptops have multiple settings that you'll have to toggle through to get back to your "laptop screen only" mode.

May 13, 2009 | Toshiba Satellite P105-S6104 Notebook

1 Answer

IBM R40 Screen Problems


I think you have an inverter board thats just about dead. It's located in the screens plastic housing at the bottom of the screen just above the keyboard. It's about 4 inches long and a half inch wide.There's just one little cable connecting it. But you have to take your screen apart to get to it. It's easy to replace and relatively inexpensive but it does require a little disassembly skill.
Also ,I will need the exact part number from the bottom of your laptop. There are several different R 40 models, and 2 different screen sizes.

Apr 14, 2009 | IBM 11P836402 for ThinkPad R40 Monitor

1 Answer

No display...


hmmm....do you have admin ability in your log in account.? If so, you can make his account, a limited user.

Mar 13, 2008 | HP Pavilion ze4115 Notebook

1 Answer

Blank Screen


contact toshiba, sounds to me like the BIOS was erased. they can send you a CD that can fix that problem. it will cost you like $10 for it

Jan 07, 2008 | Toshiba Satellite P30 P35 Series Notebook

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