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Replace the motherboard

When it powers on the screen turns black

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Screen is black


If you're getting just a flashing cursor on a black screen it's probably a motherboard/video card/hard disk problem (probably motherboard).

If there's not even a flashing cursor - just a black screen - you can add a failed power unit to your list of problems.

The easiest way to check is to borrow a power unit and video card from a friend's computer. There's no need to remove your existing power unit. Simply disconnect the power cables from the motherboard and connect the spare power unit in its place.

If your computer powers up it is obviously a faulty power unit to blame. IIf there's still nothing on the screen, power down the computer and replace the video card with the spare one. If there's still nothing on the screen when you power it up then in all probability your motherboard is history

Nov 29, 2013 | HP Computers & Internet

1 Answer

I have a black screen when i push the power button, it wont turn on but i hear the fan


i have had a problem like this but im not sure if its the same.
I had dropped my laptop and the whole thing just went black. i would press the power button and the power light would come on but the screen would just stay black and the eventually when my laptop heated up the fan would go on but still there would be a black screen. I later realized that my motherboard had been damaged. and this is a very serious problem and new motherboards cost nearly just as much as the laptop itself.

So if you have the same problems as i had then your motherboard has been damaged and you will have to get it replaced

Jan 24, 2013 | IBM Thinkpad T43/p Notebook

1 Answer

Acer laptop switched on light up on switch but no screen display


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



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





Nov 24, 2012 | MSI P45 Neo3-FR (MS-7514-010) Motherboard

1 Answer

No display


Desktop or Laptop Computer

Test all power and data leads that attach to your hard drive IDE,SATA

the leads from your (motherboard to your hard drive) make sure they have secure dust free connections and are not faulty or just replace them they might be faulty


if its a 40 pin flat ribbon type it will be the first to fail


make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty


even something as small as a faulty electrical fan and its lead can cause you problems

computers need all power and data to continue through every working device and to have an end so any faulty leads will end up with a computer error


make sure your graphics card is securely seated with no dust built up or in the socket

if you remove your graphics check the socket to make sure its dust free


restart your computer then reinstall it this should activate found new hardware wizard


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.


hope this helps

Sep 09, 2012 | Intel D865PERL Motherboard

1 Answer

Help please, just replaced lid on emachines d620, all went well, just turned it on and screen is completely black. The logo shows very feigntly as it powers up, boots up fine but completely black screen.


It sounds like the cord connecting the lcd screen to the laptops motherboard has been disconnected. You will probably have to disassemble the screen portion of the laptop and reconnect the power wires.

Jun 28, 2011 | Computers & Internet

1 Answer

When i turn it on it wont show desk top it stays on a black screen


Does your laptop have its lights on the keyboard even if your screen is black? If it is , try to remove the cables and battery of the laptop. Press and hold the power button for 8 seconds. Then reinsert the cables and battery on the laptop. Turn on the laptop, and if there is no light on screen & keyboard, it means that the power supply or the motherboard has trouble. That is the time to contact Dell support for possible repair or replacement. Otherwise if the keyboard has lights but the screen is still black, that would be a video card problem since the LCD screen is not a separate entity. Just make sure if it has the power button on the screen, it is turned on. That instance would need a video card replacement...

Jul 12, 2010 | Dell Inspiron 1000 Notebook

2 Answers

Not booting, Black screen. Cannot turn PC off by


You may want to check your power supply before you dump the motherboard.
I would remove all the devices and reseat the memory and CPU.
Clear the CMOS by removing the battery and recheck motherboard.

Nov 07, 2009 | ASUS K8V-MX Motherboard

1 Answer

Replaced P4 865G. Turned on the power afterwards to only a black.


please check your vga... try to replace the vga ...

May 26, 2009 | Computers & Internet

1 Answer

Computer will not start


1.1st check the power supply
2.check the processor

Mar 04, 2008 | Gateway (4000635) Motherboard

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