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MY LAPTOP IS ON BUT THE SCREEN IS BLACK NO DISPLAY

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Possible failure of the Display unit, the flexible strip to the display, the display driver interface on the motherboard or the power supply .
All of these will require a technical check on the mother board to confirm being a hardware issue.

Posted on Mar 31, 2011

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Posted on Jan 02, 2017

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2 Answers

What caused a black screen


I had the same problem. While rebooting the laptop the screen would be on for a few seconds after it finished rebooting then the display would go black. If you looked very carefully at the screen you could see the image was there but there was no light behind the screen to make the image visible.

I removed the black plastic display bezel cover that goes around the edge of the display screen to check out the lights and wiring. I found a small magnet that belongs inside the display bezel had fallen out of it's slot in the plastic bezel and was stuck to the inverter pcb (printed cicuit board). To fix this problem I secured the magnet into it's slot inside the display bezel with a bit of glue. After fixing the problem and putting the display bezel back together the laptop worked normally.

The magnet could possibly fall out if the laptop was closed and upside down then dropped on a hard surface. Mine did not feel very secure in the mounting slot which is why I secured it with glue.

This magnet is how the laptop knows the lid is closed. When the laptop is closed the magnet is moved closer to a magnetic switch on the inverter pcb and activates the switch. The laptop thinks it is closed and shuts off the lights behind the display screen. When the magnet fell out of it's slot and stuck to the inverter it activated the magnetic switch all the time whether the laptop was open or closed. This caused the laptop to think it was closed and shut off the lights behind the dispaly screen as soon as the reboot finished.

74aa5d08-ab1b-415f-b65b-e5730298479e.jpg

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0bff3520-95d0-4d35-9d8a-c5e3e0d627fd.jpg

Aug 28, 2014 | Acer Aspire Computers & Internet

1 Answer

Black screen


first check your display in monitor with the help of vga cable attach your laptop in the monitor,if display comes in the monitor it means your screen faulty .or if display cant seen on monitor it means there is an fault on MOTHERBOARDS BGA CHIP.

Jan 29, 2014 | Lifetime Acer Aspire 4736Z Replacement...

2 Answers

Compaq presario cq61 display not show


I had the same problem. While rebooting the laptop the screen would be on for a few seconds after it finished rebooting then the display would go black. If you looked very carefully at the screen you could see the image was there but there was no light behind the screen to make the image visible.

I removed the black plastic display bezel cover that goes around the edge of the display screen to check out the lights and wiring. I found a small magnet that belongs inside the display bezel had fallen out of it's slot in the plastic bezel and was stuck to the inverter pcb (printed cicuit board). To fix this problem I secured the magnet into it's slot inside the display bezel with a bit of glue. After fixing the problem and putting the display bezel back together the laptop worked normally.

This magnet is how the laptop knows the lid is closed. When the laptop is closed the magnet is moved closer to a magnetic switch on the inverter pcb and activates the switch. The laptop thinks it is closed and shuts off the lights behind the display screen. When the magnet fell out of it's slot and stuck to the inverter it activated the magnetic switch all the time whether the laptop was open or closed. This caused the laptop to think it was closed and shut off the lights behind the dispaly screen as soon as the reboot finished.

74aa5d08-ab1b-415f-b65b-e5730298479e.jpg

d9a5bae7-b43c-4797-8790-a1d667831be9.jpg

0bff3520-95d0-4d35-9d8a-c5e3e0d627fd.jpg

Aug 11, 2012 | Compaq Presario CQ61-310US Laptop

2 Answers

The screen is going black like its in sleep mode when i open it up


I had the same problem. While rebooting the laptop the screen would be on for a few seconds after it finished rebooting then the display would go black. If you looked very carefully at the screen you could see the image was there but there was no light behind the screen to make the image visible.

I removed the black plastic display bezel cover that goes around the edge of the display screen to check out the lights and wiring. I found a small magnet that belongs inside the display bezel had fallen out of it's slot in the plastic bezel and was stuck to the inverter pcb (printed cicuit board). To fix this problem I secured the magnet into it's slot inside the display bezel with a bit of glue. After fixing the problem and putting the display bezel back together the laptop worked normally.

This magnet is how the laptop knows the lid is closed. When the laptop is closed the magnet is moved closer to a magnetic switch on the inverter pcb and activates the switch. The laptop thinks it is closed and shuts off the lights behind the display screen. When the magnet fell out of it's slot and stuck to the inverter it activated the magnetic switch all the time whether the laptop was open or closed. This caused the laptop to think it was closed and shut off the lights behind the dispaly screen as soon as the reboot finished.

74aa5d08-ab1b-415f-b65b-e5730298479e.jpg

d9a5bae7-b43c-4797-8790-a1d667831be9.jpg

0bff3520-95d0-4d35-9d8a-c5e3e0d627fd.jpg

Jul 17, 2011 | Compaq Presario CQ61-310US Laptop

1 Answer

Toshiba satellite a300 laptop display problem screen black, no display at all.


You laptop either needs a new Cable from the Motherboard to the Screen, a new power inverter, or a new screen. Most commonly, I have seen the video cable get smashed between the hinges/plastic case, and this causes the wires to break apart, leading to a black screen.

Here is the power inverter for your laptop: http://www.sparepartswarehouse.com/Toshiba,Satellite,A300,PSAG0U-0CF035,Laptop,Inverters.aspx

Here is the video cable for your laptop: http://www.notebooksolutions.ca/zc/index.php?main_page=product_info&products_id=3392&zenid=7903c7a1a62c4c2cbfef6ea30865373c

Here is the LCD screen for your laptop: http://www.sparepartswarehouse.com/Toshiba,Satellite,A300,PSAG0U-0CF035,Laptop,LCDs-Displays.aspx

If the display comes back, slightly, when you lift the display lid up and down, this would be a sign that your cable is bad. If you get no reaction from opening and closing the lid, you may have a bad inverter or screen. It is most commonly the inverter or the cable.

If you have a spare monitor, you could plug it into the VGA connector on your Laptop as a temporary solution. If after plugging the monitor in, you get no display, try pressing Fn + F5.

Mar 09, 2011 | Toshiba Satellite A300-0CF035 Notebook

3 Answers

Laptop screen went black


When I opened my laptop this morning my computer won't come on. The screen is totally black. I took out the battery and put it back in ---- still nothing. I plugged it in with the power cord --- nothing! What is wrong with my HP Compaq Presario CQ60?

Jan 04, 2010 | Compaq Presario CQ60-220US PC Laptop

1 Answer

My laptop screen is black and won't display. What


try checking the battery and power connections to the screen, they may be broken.

Oct 24, 2009 | HP Pavilion dv6000z Notebook

1 Answer

Laptop malfunctioning


Connect any Desktop monitor to the Laptop and check whether the Display. if the display is fine on the Desktop monitor screen then it can be identified as the Laptop screen malfunctioning.
And if the Display has the same issue that on the Laptop screen
then it can be treated as the Display card issue.
However, it seems to be Harwre related issue. Get the laptop veriufied under Technical supervision to repair the Laptop's display card or the Laptop screen to be replaced if the display is fine on the Externally connectd Monitor.

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