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Black screen caused by bad motherboard?Replaced graphics card, but did not help. Fans for motherboard work.

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Try to check the memory in a different computer if you have another 1 to test it in.otherwise i would take the memory moduals out and clean the contacts with a clean no lint cloth damp with alcohol,then reseat them.if that doesnt work check the cpu and the thermal paste on it to see if its still good,then reseat it,check the power supply to,then clear the bios,then reboot again.

Posted on Aug 14, 2010


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What could cause my VIDEO CARD to fail?

This could be a simple failure of your video card. However, I had this happen and found out it was a heat sink that had come loose from my motherboard. (Heat sinks are the aluminum blocks, with fins, on top of CPUs on your motherboard, or on advanced graphic cards.)

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Why some graphic motherboard in Graphic card port disply came but in normal display not came

Difficult to understand your question.
If an external monitor works then the problem is Cheapest to most expensive:
MB to Power inverter cable is bad (No light to board) to check shine a flash light at you screen if still black not this
Power inverter is bad
(No light to board) to check shine a flash light at you screen if still black not this
Cable from Motherboard to Laptop screen is bad flashing on wiggle test will show flickering image
Display panel on laptop is bad if this is the case replace the Display cable/ Inverter power cable/LCD
this may still not solve the problem if you are not sure take to a local repair shop

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Sounds like the PCI slot is no longer working.

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Gateway dx4300

One of two possibilities; the Motherboard or power supply. In my case it was the Motherboard. Those cheap capacitors tend to go bad over time without being used. I purchased a replacement motherboard(Foxconn RS 780 "bengal") from a place in WI. Skyline on Ebay. I would do a search on Ebay for Gateway Foxconn Bengal RS780 Motherboard. Then get the number and call. You can use the old processor, ram, and maybe the graphics card, but I'd run the onboard graphics first(if you do happen to have replaced the motherboard) to make sure the graphics card isn't causing an issue. You will need to do some research and reading on the net about installing new motherboards and hardware. If the motherboard is the same, Windows should still work with it. Do your homework first as this is only a suggestion as to your problem. It is what happened to my Gateway DX4300-03. Check all power supply related, graphics card and wire connections first before you consider the motherboard thing.

Oct 12, 2012 | Gateway DX4300 Acer Foxconn Bengal RS780...

1 Answer

Black screen at startup

It sounds like the graphics card or on board graphics is causing the issue, as the external monitor is not working either. Hopefully its a graphics card which can be replaced easily, or there is an expansion slot for a graphics card to be added.
One thing you could try is resetting the CMOS by removing the battery from the motherboard and leaving for ten minutes. Replace the battery and try booting.

Mar 14, 2012 | ASUS Computers & Internet

1 Answer

Black screen no POST after installing new Intel motherboard d865dlgl

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

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

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 the electical extensions

even something as small as an electrical fan and its lead can cause this problem or just replace them they could be faulty a computer needs all electrical 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

hope this helps you

Nov 01, 2011 | Computers & Internet

2 Answers

My HP Pavillion DV5000 has a black screen (no backlight) when I shine a flashlight on the screen I can see my icons and desktop. When I turn on the laptop, the start up screen have weird reddish color and...

Most likely the screen , but it could be the invertor or even the motherboard.
Voltages must be measured on the invertor to isolate the problem.
these are not easy to trouble shoot.
If the 5 volts to the invertor is missing suspect the motherboard, also some of these have motherboard graphics card issues that can cause this issue, but since the external monitor works I'd say its not the graphics card.
I hope this helps

I’m happy to help further over the phone at

Aug 16, 2011 | HP Compaq Pavilion dv5000z Notebook

1 Answer

I just bought my new GIGABYTE RADEON HD6850 Overclocked Edition graphics card, i connected it in my motherboard (ASUS P5N-E SLI) and it seems working, the fans and stuff, but i get a black screen. I tried...

Hi, The recommended PSU for your card is 550W.
After you connect it to your motherboard you have to connect a (6pin) PCIE power connector
to the card. Without it the video card will not display anything.

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1 Answer

After switching on my PC (Windows 7), the screen

Well it'd be nice to know the make/model, I can atleast assume it's an hp because of where this is posted. Some additional details that lead up to you wanting to restore to a prior date would help too. Also,if it goes black as you say,how is it that you could get into system restore? Or was that a typo? Anyway, here's my shot in the dark, see if there's power anywhere on the pc when it goes black,ie. hard drive spinning,fans,diagnostic lights,sound,etc. If it does, then if it has onboard video & you use a graphics card, remove the graphics card & plug the monitor into the onboard port. If this fixes the problem,you need a new graphics card. If it only has onboard video,then open the computer & see if there's a graphics card slot & install one if you have one that is the proper slot type. Don't worry,can't put the wrong kind in,they all have different connectors. If doing that fixes the problem, the motherboard is going bad & the video chip was the first to go. Now all this is assuming it's a desktop,laptops have built in video only & most have a port on back for an external monitor,which you can plug into to see if the same problem happens,if it does,the motherboard is bad. Post back with the additional info if this didn't help.

May 13, 2010 | Computers & Internet

2 Answers


First thing is check the monitor by replacing it with any working monitor. If that does not work remove the Graphics card and do the same. The problem will be either in the Graphics card or the monitor....sodeep

Apr 09, 2009 | ASUS P4P800S-X (610839118175) Motherboard

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