Question about Sony VAIO VGN-N250N/B Notebook

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Black screen the laptop is on, i can hear that it turns, green light of power and wirless are on, but no image appears whatever I do.

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How brave are you ?

is it under warranty ?

Posted on Nov 21, 2008

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Acer aspire 5515(laptop) screen is black turns on screen stayscompletly black...no acer logo nothing just a black screen. power button comes up green u can hear the fan and harddrive start up


If your laptop appears to boot up and the hard disk LED flashes, then the problem is probably a back light fault. This can be a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

Feb 02, 2013 | Acer Aspire 5100-5033 Notebook

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HP laptop screen is black


A blacked-out screen doesn't necessarily indicate a broken monitor.
If the computer has run out of charge or is in hibernation or sleep mode,
if the screen is too dark, or if the display cable has come disconnected from the motherboard, the screen may appear black or fail to turn on. To fix a blacked-out laptop screen, troubleshoot the screen settings, check the LCD connector and see if the computer is awake and receiving power.
Touch the touchpad or move the external mouse to see if the computer is asleep or hibernating. If the computer fails to respond, press "Enter" on the keyboard. Press the power button if the screen remains black.

Confirm that the power indicator light, found at the front of the computer or above the keyboard, is glowing solid green or blue. Confirm that the power adapter is plugged into the computer and into a wall outlet. Confirm that battery indicator light is glowing solid green or blue. Hold down the "Fn" key. Press the up-arrow to see if the screen brightness increases.
Some computers also use the "F6" or "F7" keys to increase screen brightness.
Hold down the power button for 10 seconds to turn off the laptop.
Remove the AC adapter from the computer, close the screen, and then turn the PC over.
Slide the battery latch to eject the battery. Pull the battery out of its compartment. Turn the computer back over, open the lid, and insert the edge of a flathead screwdriver or other flat, solid object beneath the bezel above the keyboard. Wedge the edge of the keyboard bezel off of the top cover.
Work your way along the edge of the keyboard bezel to loosen it.
Pull the bezel off the laptop.
Trace the cable coming from the laptop screen to the connector found beneath the bezel. Reconnect the display cable to the motherboard if the cable has come loose from the connector. Line up the tabs on the bezel with the slots along the top of the keyboard. Insert the right edge of the bezel into the gap above the keyboard, and then push the bezel back in place. Turn the computer back on. If the laptop screen is still blacked out, connect an external monitor to the video port on the side of the PC to confirm that the video card isn't defective. If the external monitor works, the LCD screen could be broken. If the monitor doesn't work, the motherboard or video card might need to be replaced. Hope this helps

Jan 08, 2013 | HP VM114UA notebook

2 Answers

My 1501 Dell Inspiron turns on but I have a blank black screen. The only light that shows is the power light on the upper right side of the laptop.


Power getting to the laptop. Try first to see if this will give a screen image on an external monitor, listen for the sound of the cpu fan, hard drive and DVD rom drives clicking, see if the DVD rom drive will open if pressed.

Then remove battery and AC adaptor, press the power button for 30 secs, refit mains only and try this on mains supply (no battery)

If this fails to boot, check the light on the ac adaptor is a steady green, flashing green indicates power is not fully reaching the laptop (motherboard problems)

If it is steady and the LED power light on the laptop is steady, suspect the DC jack socket. If this feels loose or sloppy, it will need replacing, depending on the type fitted, it may be soldered onto the board, or a wired connector, which sometimes goes bad.

After that, I'd suggest that a capacitor has gone on the actual motherboard and you will need to strip the laptop to check it.

Jul 18, 2011 | Dell Inspiron 1501 Notebook

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Black Screen


possibly ur display chip or graphic chip faulty. repair it from laptop repair prof.

Jun 25, 2010 | Toshiba Satellite A205-S5804 Notebook

1 Answer

Black Screen on Toshiba Satellite A105 S1014


Blown or damaged graphics chip on motherboard, would take to specialist repair shop

Feb 09, 2010 | Computers & Internet

1 Answer

My medion laptop doesnt't turn the screen on even though the power light is on green and I can hear it working but still screen is black. plzzzzzzzzhelp


have you got any external monitor? please try with the external montior to be sure. if you have a view something wrong wtih the lcd.

Jan 21, 2010 | Computers & Internet

1 Answer

Computer turns on but screen stays black


This is often caused by the screen lights or screen failing. Try looking at the screen from different angles in different light conditions, you might just be able to see the image.

Oct 02, 2009 | Dell InspironTM 1501 Notebook

1 Answer

Acer aspire blue screen appeared went off now laptop starts up for few seconds then turns off again, but always a black screen hear the fan a few seconds but nothing


Try this:
  • check to make sure the fan is actually spinning and that there is no debri (dust bunnies) causing it to overheat.
  • Make sure there is nothing preventing airflow, you may need to tilt the back up to allow more airflow
Is there any display at all? Do you see a BIOS splash screen? Do you hear a beep shortly after powering on?

--if you have a splash screen, go into BIOS setup by pressing a button (del,F1,F10...whatever) then set it factory defaults and save changes

--also try removing anything that's detachable (USB, cards, dvd-rom, RAM, Battery...) Hold down the power button for 20 secs then plug in only the A/C and see if you get a bios screen

Hope this helps

Jun 10, 2009 | Acer Aspire 5100 Notebook

1 Answer

HP pavilion notebook screen turns black after flickering


You most likely have a defective screen - a defective inverter or a CCFL lamp or simply the video cable needs reseating. After reseating the video cable and the problem is still there then :-
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display or appear black.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

Jun 01, 2009 | HP Pavilion DV5Z PC Notebook

1 Answer

Black screen


Sounds like the inverter that poweres the backlight is dead. Search on eBay for the FL inverter for your model. Should be easy to replace.

Jul 04, 2008 | Acer TravelMate 2500 Notebook

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