Question about Mercury KVM400M-U Motherboard

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How do i power my motherboard from the power supply

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On the motherboard, there is a connector for a software controller ON/OFF push-button switch that will toggle the computer from one state to the other.

Posted on Sep 28, 2010

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Intel desktop d845epi in the motherboard is not powering on.plz send a solve procedure.urgent


computer not power on can be caused by 2 thing, first is your power supply was dead, and the second is your motherboard was broken
try to connect another power supply, if your motherboard can power on it mean your power supply was dead if still not power on it mean your motherboard was dead, change the motherboard with new one

Mar 18, 2011 | Intel Desktop Board D845EPI Motherboard

5 Answers

There is no power switch on the enhance atx 1123b that I have . What actually powers it up?


Just about every power supply I've owned doesn't have a power switch. The power supply is turned on by one of the wires in the 24 pin connector. According to this it looks to be pin 16 and how to turn it on:

"Short this pin to GND to switch power supply ON, disconnect from GND to switch OFF."

Hope this helps

Ray

Mar 01, 2011 | Enhance Technology ATX-1123B, Enhance...

1 Answer

Gateway 500s power box when hitting test button powers both fans, but no power to hardrive, dvd, or monitor. I have replaced power supply, motherboard, and harddrive, I have nothing, but green power button...


Does the fan on the power supply run? As you say the power on switch lights up and so does the motherboard, means that the power supply is working. Monitor gets power from the socket on the power supply. Try plugging it in the wall socket. Try to unplug the main power cord from power supply to the motherboard. The one that has a broad plug at the motherboard end. Replug it and they power on the PC.

Sep 11, 2010 | E-Machines Bestec ATX-300-12E Rev. D 300w...

1 Answer

My computer won't start. Power supply (ttgi 450ss) has a blinking green light and the power supply fan starts when plugged in. Motherboard (asus m2npv-vm) has a green light illuminated between the pci...


See if you plugged in the 4 pin power connector on the motherboard besides the main power connection on the power supply (usually black colored and its a plastic 4 pin connector)

Try another power supply if all else fails. If new power supply does not work with this unit then its a motherboard which is blown and motherboard needs replacing.

Hope this helps

Mar 16, 2010 | TTGI SUPER FLOWER 450W quad fan switching...

1 Answer

Hello there, I got Asus PC-DL Deluxe UAYZ motherboard and would like to connect to ATX 300W 20 pin power supply. Do you think it works, or should i wait till i find 24pin power supply. thanks for your...


This motherboard is designed to be used as a workstation or server. This mother board will need a specific power supply designed for this board as it can use 2 Xeon CPUs. Setting this board with the incorrect power supply will cause the system to not power up or at worse result in damage to the CPU, motherboard, memory, video and other devices including possibly the power supply. I suggest obtaining the proper power supply for this motherboard

The manual for this board states that the motherboard requires a 24 pin ATX power supply that also has an 8 pin 12 volt connector. The manual from ASUS recommends no less then a 300 Watt power supply. I would professionally recommend 500 watts or more if the system will use 2 CPUs and many hard drives in a RAID array.

A suitable power supply can be found here at Newegg http://www.newegg.com/Product/Product.aspx?Item=N82E16817163111

The manual is here at ASUS's support site at http://support.asus.com/

Feb 24, 2010 | ASUS PC-DL Deluxe (90-MSV290-G0UAY)...

1 Answer

When the power supply is connected to motherboard it goes off itself


problem lies in the motherboard there is mosfets on the motherboard which is short and because of short circuit protection power supply goes off itself so either replace the motherboard or repair

Feb 01, 2010 | AOpen FSP200-60SAV (5604200H220) 200-Watt...

1 Answer

Powr supply checks out with tester, but when plugged into a BRANDNEW motherboard. Flashes green, Power switch is in and fans are in. Is it possible for P/S to be bad only when drawing from board?


There are many possibilities here. The motherboard could be installed incorrectly causing a short. The motherboard may not support the processor. A hardware device plugged into the motherboard may be shorted. The power supply may be defective under load ( when plugged into everything). No memory is installed on the motherboard. The power supply is too small for the motherboard that was installed. The first thing to check, is to plug in the motherboard connectors only with memory installed then try to power up. If at this point it will not power up, then you have a problem with the power supply or motherboard. If it powers up at this point, then plug in one device at a time starting with the hard drive and try to power up. If it continues to power up, plug in another device. If this process continues work, then you will find that either you have a shorted device or your power supply will not support the motherboard and all of the installed devices. It is also possible at this point that the motherboard is defective, by using more power than it should causing an overload on the power supply with all devices plugged in.

Dec 27, 2009 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

2 Answers

Will not power up


This is a common problem with Emachine motherboards, the problem is the power supply is a best tech and allows voltage surges to the motherboard which fries it too. If available you usually have to replace both the power supply and motherboard. I do not know what exactly goes bad on the motherboard but I have replaced many emachine power supplies and motherboards. The motherboard kit which used to be available from Emachines included a power supply and no warranty if you didn't change the power supply. They knew they had a problem.

Dec 27, 2009 | E-Machines (308714) Motherboard

1 Answer

Power supply


Yes you can make it 450watts power supply.

Jan 08, 2008 | Matsonic MS8177C Motherboard

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