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No signal I just installed a new motherboard in my computer but it is not sending signal to the monitor, we just change the power supply to see if that could be it but it is doing the same thing.

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Have you tried different video card? try to use the onboard videocard of your motherboard and securely tighten the vga/hdmi cable.

Posted on Jun 11, 2008

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Dont show video but it turn on perfectly


Usually indicates a bad Power Supply.

LED lights light, fans spin, but NO Signal on monitor.

No Video Signal, because the computer isn't sending one out.
Because the computer isn't working.

Know this;

1) If ALL the LED's were on at once, they would use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts of power.

3) A typical processor can use from 51 to 125 Watts of power.
Just depends on what Processor it is.

A Power Supply with a weak voltage power rail, will not have enough power to turn the Processor on.

However not to jump the diagnostic flow chart; check the monitor cable FIRST.
Use on another known to be working computer. If it checks out OK, the problem is the computer, and I think -> Power Supply.

Test the 3 main voltages on the Power Supply, with a multimeter set to DC Voltage; OR use a KNOWN to be good, Compatible power supply, for a test unit.

For additional questions please post in a Comment.
Regards,
joecoolvette

Dec 29, 2012 | Motherboards

1 Answer

When i press power on power supply turn on but power led is orange should be green , prosser fan works but prosser not work correctly , i put this prosser in another computer works very good rams and...


This is a problem coming from your signal cable(cable from system unit to monitor).
All you have to do is to change it.
If it still doesn't work, you have to change your monitor

Jan 26, 2011 | Dell Motherboard Socket 775 For OptiPlex...

2 Answers

I have no signal to my monitor. The asus motherboard is now unavailable. It means changing motherboard, processor and memory. is it worth it? Can I salvage my hard drive if I buy a new tower system...


If you have no signal to your monitor, ther are generally three parts that can cause this: the monitor, the DVI/VGA cable (from PC to monitor) or the graphics card. If I were you I'd try to replace those first, then the motherboard. I'm sure there still are socket 939 motherboards out there, so you will not have to replace memory or processor. Just let someone at a local computer store take it apart, install the hardware on a new motherboard, put the harddisk in the system and reinstall Windows.
(the latter because drivers for the old motherboard may conflict with the new ones. If you don't have any problems with that, don't)

I hope this helps,
Yannick.

Oct 15, 2009 | ASUS A8N-VM Motherboard

1 Answer

My computer turns on but nothing responds


Most likely your motherboard was DOA. Send it back for a replacement. Sounds like you've done all the troubleshooting stuff.....do double check the power supply connector...especially the P4 connector that I have occasionally forgotten to plug in...that will also cause the symptoms you describe.

Aug 14, 2009 | Intel D915GUX Motherboard

1 Answer

Not booting up


try changing your memory or your processor. you might get a result

Jun 11, 2009 | EliteGroup ECS L4VXA2 (CDL4VXA2)...

1 Answer

Lighting came into my computer via the ethernet cable. can this be fixed I also think it took out my power supply un it. It is a gateway 500c.


If only power supply's affected, then change the SMPS with a compatible one of the same rating. But first check the monitor by connecting to the mains power supply with the video chord not attached to anything. if the monitor displays "no videos" signal, then the monitor is OK cange the SMPS of the CPU and check UPS & spike boards fuses, otherwise commect to main power supply pluf(Wall 3-pin outlet socket)......sodeep

Jun 09, 2009 | Gateway (4000274) Motherboard

1 Answer

I have a P5LD2 motherboard and everything was going well, until it start to do horizontals lines on the monitor. I tried to stop the computer by the power switch, but it did not stop. I had to stop the...


If you are using an AGP Graphics Card, try a PCI VGA card. Maybe you have a faulty AGP adapter.
Assuming of course you know for sure that the Monitor and VGA cable are good.

Mar 06, 2009 | ASUS P5LD2 Motherboard

1 Answer

My asus motherboard


change motherboard really this even can t ovclock it

Jul 12, 2008 | ASUS P5PE-VM Motherboard

3 Answers

PC can't start, Monitor blank can't show BIOS setting


i can help ya with your problem send me a message i had the same problem tooo awhile ago

Aug 14, 2007 | DFI NFII ULTRA-AL Motherboard

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