Question about Gigabyte GA-MA78GM-S2H (rev.1.0) Motherboard

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Hi, I'm currently facing MA78GM-US2M rev 1.0 no DVI / VGA signal after power up.. This is the 1st time encountering such issues after 1 and a half year. I had tried with both VGA and DVI but doesnt helps. Had verified my monitor and its working fine. one point that I notice that my optical mouse did not light up after power up. Is there a possibility that all of it's external port failed? thanks a million..

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  • Gigabyte Master
  • 27,725 Answers

Fist clean your computer of dust using a fine air blower from a compressor specifically around your CPU central processing unit making sure there is no moisture in the air line
dust will cause a lot of static which will make a computer overheat and cause lots of unforeseen problems
Test your power supply unit if the PSU units fans not working its faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect your hard drive boot up

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 connection and are not faulty or just replace them they could 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 or just replace them they could be faulty ?
one bad lead will end with a computer error computer error a computer needs its connections continue its cycle and have an end to function
hope this helps

Posted on May 26, 2011

  • Brian Sullivan
    Brian Sullivan May 26, 2011

    even something as small as an electrical extension or a faulty fan lead can cause this problem follow the troubleshooting procedure a computer needs all of the data and electrical current to travel through every device and to have an end to be able work properly
    a motherboard and a hard drive any leads between them will fail before your motherboard or your hard drive if its a flat ribbon 40 pin type IDE replace it this will be the first to fail check all electrical extensions make sure they are securely seated even the cd/dvd floppy drives need to have current go through make sure these drives are working also it could be a dirty graphics card clean all of the dust from your computer you could use a vacuum cleaner but whatever you use make absolutely sure there is no moisture gets to anything in your computer and before you touch anything be sure to wear an earth strap

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Not all TVs will support an HDMI signal from a computer, so the VGA signal is often better. However, that limits you to SD (anything with HDCP will fail.)

Very few TVs ship with the HDMI or component cables. However, there are some vendors who do package the HDMI cable with their TV. Without knowing which exact model of TV and laptop, I can only make a few suggestions. I know that the TCP42ST30 (Plasma 42") doesn't have a VGA port.

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If you have the VGA port on the laptop but not on the TV, you can try a converting from VGA to HDMI. (You may need a DVI to VGA adapter and either a DVI to HDMI cable or a DVI to HDMI adapter.) Note: this gives an analog signal (RGB format) to the TV. You'll also need to make sure that your VGA port is active (in the BIOS for some computers) and then set your computer to send the signal to the external monitor. It is best to turn off both the computer and the TV before connecting the two. Then turn on the TV and set it to the correct input before turning on the computer. (In Windows 7, I set the video signal for the external monitor by right clicking on the desktop and selecting Graphics Properties. Set the signal to the external monitor and click Apply. Then click OK (in the external monitor's screen).)

If this doesn't work, you need a VGA to component video converter. (Not a VGA to component video cable - those are for projectors that read the RGB signal.) See http://www.ramelectronics.net/audio-video/video-converters/vga-rgb-hv-to-component-video/c10000-c11200-c11215-p1.html .

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If you add a comment with the model of your TV and laptop, I'll be glad to give you more specific options to connect the TV and the computer.

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If you need more help post back!
Thumbs and testimonial are welcome!

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hi my name is Rui i would like to help you with your problem...

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3. DVI - DVI stands for Digital Visual Interface with "digital" being the key word there. The digital signal will give a higher quality picture than either S-Video or VGA. Of course, your computer will need to have a DVI connection and your TV will need to be an HDTV. This cord is definitely not cheap, it ranges anywhere from $40 to $80.

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so you should be able to use one of them as well as the VGA. Maybe you need to change something in the BIOS settings? I don't have this motherboard myself, just found the manual online at
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