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Issue with a In Shin Power Supply

I took out the internal components of my boys computer it is the MSI Motherboard part # 2516512 it had a 90 watt power supply. The power supply quit working so I bought a case with a 350-Watt power supply the front panel has 16 pins on the motherboard, but the new power supply has more connectors than the motherboard has. Ive been trying to find a manual via the internet, but was unsuccessful. I know where the #1 pin is not sure the order of the pins I have the pin descriptions from the Gateway Website it's a Christmas present for my boys and I need some assistance

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Ok, the part # is not the model # . I need the MODEL # of the board to help U .

Posted on Jan 08, 2008


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Power supply

Any 450 Watt SMPS power supply is ok. Zebronic or Mercury retails around Rs.450 to 500. No need of costlier power supply like Corsair etc.

May 05, 2013 | MSI Custom 845 Ultra-c Ver:1 Motherboard...

1 Answer

Msi 6378 turns on but I don't see anything on the monitor

Not trying to be trite sir, but I think that is a broad unsupported statement........

If we look at the known universe...........

!O_O! What a minute?...........What?............Oh........, video card, cpu, ram, cd drive, hard drive, and power supply work; (Semi-Colon), as well as the motherboard itself...........

With all due respect what do you base all that diatribe on?

Fans spin, and LED's light up; and you're going to assume the other hardware components, must be working as well?

THAT, is your basis for your hypothesis?

A) You can see the fans spin......

B) You might hear the harddrive spinning it's platters, while it is in an endless loop............

C) You can press the optical drive's (CD/DVD drive) tray release button, and open the tray.......(To assume it's getting power)

But tell me how you assume the cpu, motherboard, ram memory, graphics (video) card, and Power Supply; to be good?

What do you base this assumption on?

With all due respect..............nothing.

Your observations are baseless.

Seem like I'm trying to be rude?

No sir. Trying to get you to think outside the box

What is the common 'denominator' here?

What hardware component is common to all the others?
That........if not working at full capacity, would not allow the others to work?

The motherboard is the 'Building Block' of a computer.
The CPU is the 'Brain'
The Power Supply is the 'Heart'.

No 'heart' you have nothing.

When diagnosing desktop computer failure, the first hardware component to diagnose; is the Power Supply.
Without it operating at full capacity nothing else works.

Past this point the diagnosis can go on. (Power Supply deemed to be good)
If not you will be pulling your hair out searching for answers.


1) If ALL of 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 CPU (Processor) can use 51 to 130 Watts of power.

A Power Supply with a weak voltage power rail, will have power to light those simpy LED's, and maybe spin fans; but will not have enough power to turn the CPU -> ON.

Have an economical multimeter?
They range in cost from $5 to $12, usually.
I have seen them on checkout aisle racks, at major discount stores.
Auto parts stores have them, but usually more expensive.

With it you can test the 3 main DC Voltages, coming out of the Power Supply;
3.3 Volts
5 Volts
12 Volts

Again, all are DC Voltage.
In comparison two D cell flashlight batteries produce 3 Volts DC.
(The dangerous AC voltage is kept contained, in the metal case of the Power Supply)

Use a KNOWN to be good, Compatible power supply for a test unit.

("I need to borrow the Power Supply out of your computer honey.
No, no.......I'll put it back. This shouldn't take long.
What? Touch it, and I'll lose sum fingers?" )

Also, follow Anti-Static Procedures, and look at the Electrolytic Capacitors on the motherboard.
In fact, what the hey right? Might as well look at them first,



Capacitors on the motherboard are used as Filters, or Voltage Regulators.
The ones used as voltage regulators are in the
Motherboard Voltage Regulator Circuit.

Part of what the motherboard voltage regulator circuit does, is regulate voltage for the processor.

The processor MUST have a steady, 'clean', supply of voltage; and it MUST be kept within the tight voltage tolerance range, for the processor.

Too little, or too much, and it turns off. (BIOS turns it off)

(For older motherboards, and to include older server computer motherboards; voltage regulation for the processor was accomplished with a VRM. Voltage Regulator Module.
A separate, replaceable 'card' )

Post back in a Comment


(One last little item that seems to slip through the cracks, the Ram Memory. Clean the gold plated contact pins with a pencil eraser. Use air to remove the eraser dust )

Mar 29, 2013 | MSI MS-6378 Motherboard

1 Answer

What is the sqare chuck , wires two black and two white wires on the motherboard ?

Boy, ya got me.

If it was a small square opaque white socket on the motherboard, that a power cable from the Power Supply; had two YELLOW wires, and two Black wires, and plugged into it, I would know what it is,

As technology for personal computers advanced, hardware components needed more power.
The motherboard wasn't able to deliver the power needed, so the 4-pin ATX +12 Volt power cable, was brought out.

More power was needed later.
Hardware components demanded more power, than a 4-pin ATX +12 Volt power cable could deliver.

So the 8-pin EPS +12 Volt power cable was brought out,

It CONNECTS to the motherboard. (For motherboards that use one)
NOT to be confused with the 8-pin PCI Express power cable,

This power cable plugs into a GRAPHICS CARD, not the motherboard. Note the color code of the wires.

For a PCI Express expansion slot on the motherboard, for a graphics card; the best the PCI Express slot can deliver is 75 Watts.

The 6-pin PCI Express power cable was brought out next,

It is plugged into the graphics card too, and can deliver up to an additional 75 Watts.
Now there is 150 Watts available for the graphics card.

Computer technology advanced, and the 6-pin PCI Express power cable, couldn't deliver the power needed.

Now comes the 8-pin EPS +12 Volt power cable.

The 8-pin EPS +12 Volt power cable by itself, can deliver up to an additional 150 Watts.

Now there is 225 Watts available for a graphics card.
75 Watts from the motherboard, 150 Watts from the 8-pin EPS +12 Volt power cable.

Color code of wires;
1) Orange = 3.3 Volts
2) Red = 5 Volts
3) Yellow = 12 Volts
ALL are DC Voltage

(Two flashlight batteries produce 3 Volts DC)

4) Black wires are Ground wires. Also are known as Negative wires.

This motherboard happen to have a manufacturer name, and Model Number?

Can't find it?
How about the computer manufacturer name, and model number, it came out of?

The model number for a desktop computer, is on the back of the computer, next to the Windows product key; or up on the side of the computer tower.

(The plastic front of a desktop computer is the Front Panel.
Some older computers had a Door in the Front Panel.
The door is opened, and you look inside -> Down, for the model number)

Post back in a Comment.


Feb 08, 2013 | Computers & Internet

2 Answers

I have corei3 system. their confiuratio is intel corei3 processor 3.2 ghz/intel DH61ww motherboard,seagate 500gb sata hdd,lg 22x sata dvdrw50w smps,atx comuter case,15.6" lcd acer monitor,xerox phesar...

sounds like you need a higher wattage power supply!! meaning if you have a 500 watt power supply and it burned up then you may need a higher wattage power supply!! try a 650 or 750 watt power supply. there is only 4 screws holding the power supply in place, just un-plug all internal power cables and remove the screws and do the reverse with a new power supply. please go slow the connecting internal power cables are keyed meaning that they only fit one way!!! DO NOT FORCE THE PLUGS INTO THEIR SOCKETS OR YOU WILL BLOW UP YOUR MOTHERBOARD!!! sorry for the caps!

Aug 24, 2011 | Intel Desktop Board DH61WW Classic Series...

1 Answer

I have a msi 770-g45 motherboard, my computer suddenly just died. Now it wont power up anymore. The led indicators give a short blink and nothing more happens.

Usually a direct indication of a bad Power Supply. Weak voltage power rail, (Or more than one)

1) ALL of the LED lights on at once would use less than 1 Watt of power.
2) EACH fan uses 2 to 3 Watts of power.
3) A typical Processor can use 51 to 125 Watts of power. Depends on what Processor it is.

You have enough power to briefly light a few LED lights, and that's it.
Do you have a KNOWN to be good, Compatible power supply available to use for a test unit?
One you could perhaps borrow from a working computer?

Failed power supply, and computer is dirty inside, are the two leading causes of computer failure.
The Power Supply is cooled by air as are the components inside the computer.

The Power Supply uses Heatsinks inside, and an internal fan, for it's cooling components.

Example of the inside of a typical SMPS, (Switched-Mode Power Supply),

The cylindrical blue 'can' shown as B, is an Electrolytic Capacitor, (Radial Aluminum Electrolytic Capacitor)
To the immediate right of the blue capacitor is a Heatsink. Looks like a series of finned squares connected together.
There is another Heatsink to the right of the letter C.

{Basic construction of a Heatsink is a plate of metal with tall, thin fins protruding from it.
The plate of metal absorbs heat from whatever object it is placed against, and the tall, thin fins absorb heat from the plate.

The fins then radiate the heat away.
The fan draws air across the fins of the Heatsink, and the air flow helps to carry heat away}

When the fins of the Heatsink are clogged with dust, dirt, etc., and the Fan blades, center hub, and surrounding cage, {Shroud}, are also clogged, the cooling capacity drops tremendously.
This causes the components inside the Power Supply to overheat.

Heat = Wasted Energy

The Power Supply strains to keep up with the call for power, but due to the overheated condition cannot, and eventually components inside the Power Supply fail.

Opening a Power Supply, and trying to repair it is not a recommended suggestion.
Electrolytic Capacitors can hold a charge for weeks, months, sometimes over a year.
Without using the proper technique to drain the residual power from the capacitor/s, the charge can be released to YOU.
The shock can be Bad to Fatal ]

Best suggestion is to just replace the Power Supply.
For additional questions please post in a Comment.


Apr 03, 2011 | MSI 770G45 Motherboard

1 Answer

Emachine total black , this are on fan

LED lights are on? Fans spin? I suggest you have a bad Power Supply.

1) eMachines are noted to have low quality Power Supply's.
Saves eMachines money so they can sell budget computers.

2) A bad Power Supply is one of the leading causes of computer failure. I have, (Had actually), a shop half full of computers with this 'ailment'.

Some caused by the owners never cleaned out the inside of their computer, nor the inside of the Power Supply, with a can of compressed air for computers on a regular basis as needed.

3 to 5 years without cleaning the inside of their computer.
Mice could have made nests inside easily, with the 'Gunk' that was there. A bald eagle could have too. Rant off.

Others, caused by the computer manufacturer used a low quality Power Supply.
Low quality components used inside.
One of the major components that fails, is caused by a particular Electrolytic Capacitor that is used.

3) Power Supply's used in PC's are a type of SMPS.
(Personal Computer. Statement holds true no matter what type of personal computer it is)

[ SMPS = Switched-Mode Power Supply
PSU = Power Supply Unit
All terms relate to a Power Supply used in a PC ]

A bad Power Supply will have a weak voltage power rail.
There are three major power rails used in the ATX form factor Power Supply, for an eMachines T6420 desktop computer.

A) The 3.3 Volt power rail (DC)
B) The 5 Volt power rail (DC)
C) The 12 Volt power rail (DC)

(Two D cell flashlight batteries produce 3 Volts DC)

A Power Supply with a weak voltage power rail, may have enough power to light LED lights, and spin fans, (or spin a few times, ans stop), but won't have enough power to turn the Processor on.

1) ALL the LED lights combined use less than 1 Watt of power

2) EACH fan uses 2 to 3 Watts

3) A typical Processor can use 51 to 125 Watts.
Depends on what Processor it is.

eMachines T6420?
Uses an AMD Athlon 64 3400+, processor.
(Socket 939)

[The motherboard used is an MSI ms-7207
Also known as K8NGM2-L ]

This Processor can use Up To 89 Watts.

No Processor running, No computer.
No computer = No Video Signal

Suggest using a KNOWN to be Good, Compatible power supply, for a test unit, if available.

Should be the ATX form factor.

Approximately 6 inches Long, (15.24cm), 6 inches Wide, (15.24cm), and 3-1/2 inches Tall. (8.89cm)

250 Watts.
Correct amount of power cables, and the correct type.

Sep 20, 2010 | E-Machines T6420 PC Desktop

2 Answers

Faulty power supply or MOtherboard?

Test the Power Supply first.

If you have a multimeter, use the Positive (Red) probe lead to connect to the power wire to be checked.
The Negative (Black) lead connects to ANY ground wire. (ALL Black wires are Ground wires)

Three main voltages are produced by a personal computer Power Supply.
1) Orange insulated wires are 3.3 Volt
2) Red wires are 5 Volt
3) Yellow wires are 12 Volt.
(Again, ANY Black wire is a Ground wire)

Or use an economical power supply tester.
One example,

You are making a connection from the green Soft Power On wire, to any Ground (Black) wire with that jumper wire.

Using an HP Pavilion A1330E desktop computer for an example,
we can see that the main power cable is a 24-pin ATX main power cable.

This is readily shown by looking at the motherboard,

Scroll down to the motherboard illustration, and the motherboard photo underneath the illustration.

This is the pin-out for a 24-pin ATX main power cable, and connector,

The Green wire (Pin 16) is the Soft Power On wire. The other end of the jumper can touch ANY Black ground wire.

1) ALL the lights use less than 1 Watt of power.
2) EACH fan uses 2 to 3 Watts.
3) A typical Processor can use anywhere from 51 to 125 Watts. Depends on what Processor it is.

The three Processor options for the Pavilion A1330E are, (Socket 939 style),

A) AMD Athlon 64 X2 4800+
B) AMD Athlon 64 4000+
C) AMD Sempron 3200+

The Sempron 3200+ can use up to 62 Watts
Athlon 64 X2 4800+, 110 watts, and Athlon 64 4000+ can use up to 89 Watts.

You have nothing but the motherboard plugged in, and the Power Supply takes a 'nose dive'.
Power LED turns off.

Bad Electrolytic Capacitors in the Power Supply.
Replace power supply.

What causes this?
1) Most computer failure can be attributed to the inside of the computer is dirty, as well as the Power Supply.

When the cooling components of the Power Supply, (Fan, and internal Heatsinks), are clogged, the cooling capacity drops tremendously.

Heat = Wasted Energy

The Power Supply tries to keep up with the call for power, and eventually components inside the Power Supply fail.

A can of compressed air for computers, used on a regular basis as needed could prevent this. (Observe Anti-Static precautions Before placing hands inside computer)

2) Cheap quality power supply.
Saves the computer manufacturer money.

May 22, 2010 | HP Pavilion A1330E Customizable PC...

1 Answer

I have had a motherboard failure the MS-7357 (V1.X) Mainboard... needing upgrade thinking of the MSI G41TM-E43 LGA 775 Intel G41 will i have to mess arround with the power switches with the case as this...

Boards don't come with switches. The problem with company made computers is that they get a manufacturer to make a board especially for the case they make. They do this to specifically stop you doing what you are trying to do, upgrade a machine with a proprietary board in THEIR case. You will find trouble at the rear of the machine getting to sockets and plugs.

It is far better to buy a good case, and then you can swap out components with ease. The case that held my Asus boarded P4 with the first SATA drives now has an Asus Quad Core in it with SATA 2.

MSI G41TM E43 LGA 775 Intel G41 HDMI Micro ATX Intel Motherboard Newegg ca

I would contact MSI direct

G41TM E43 MSI Global

Some of this might be useful

G33M - MSI
... the app from the MSI website. Features - Automatically Detect the BIOS/Driver/VGA/Utility Update - Support Microsoft Windows XP/Vista/7 32/64bit. featurePic ...

::UPGRADE:: G33M (MS-7357) - new processor and RAM - MSI Forum Mar 11, 2009 - 6 posts - ‎2 authors
The motherboard is a G33M (MS-7357) and has a piddly 1.6ghz processor and 1gb of generic RAM. I'm running Windows XP Home.

CPU-Upgrade: MSI G33M (MS-7357) processor support and ... > MSI Nov 28, 2010 - MSI G33M (MS-7357) motherboard specifications ... FSB 200 MHz, L2 512 KB, TDP 35 Watt, Conroe-L, Rev A1, SSpec SL9XP,

UserBenchmark: MSI G33M (MS-7357) Compatible Builds Compatible Components (from 7 PCs). Popular components in PC builds with the MSI G33M (MS-7357) Motherboard. CPU. Core2 Quad Q6600Intel $190Bench ...

Oct 21, 2017 | MSI G41TM-E43 LGA 775 Intel G41 HDMI Micro...

1 Answer

My msi k8n neo platinum is not starting no power in mother so please tell me what should i do and whats the problem in motherboard it has no power when press start it and no beep no power tell me

Bad Power On switch, or bad power supply.
My money's on the bad power supply.

There is a way to bypass the Power On switch. Should you wish to know the procedure, state so in a comment.
(Believe upper right of page)

After you have made sure it isn't a bad Power On switch, check to make sure the 20-pin ATX motherboard power cable, is seated in the motherboard. TIGHT.

(Whitish see-through, long connector on motherboard.
Has 20 socket holes. 10 on each side.

Make sure the power cable is plugged in all the way, to this connector.
Make sure the lock on the side of the connector, is snapped in place.

(This one,

REMEMBER, computer unplugged from power! TOUCH the metal frame of the computer case, BEFORE you reach inside the computer.
Relieves your body of Static electricity)

Next, Power Supply.

When you press the Power On button, you are pressing a Momentary Contact switch.
The Power On switch that is behind the Power On button.
The switch is spring loaded inside, so that when you let go of the button, the switch opens up.
No contact.

When the switch makes contact for a brief second, a circuit is created. 5 Volts is sent through the motherboard, to the Power Supply.
The Power Supply turns on.

Power is sent to the motherboard. BIOS is the first program to be turned on.

BIOS 'see's what devices are installed, does a Ram Memory count, turns the Processor on, and hands the computer over to the Operating System.
(Windows XP is an example of an O/S)

Not enough power to turn the Processor on.

Your power supply has a weak voltage power rail, or a failed voltage power rail.

The power supply you have for your MSI K8N Neo Platinum, has three main voltage power rails.
1) The 3.3 Volt rail
2) The 5 Volt rail
3) The 12 Volt rail

Inside the Power Supply.
There are many components used inside a SMPS power supply, (Switched Mode Power Supply)
The main component that fails is an Electrolytic Capacitor, (Or more than one)

(Information about SMPS,

You can click on the photo to the top right of this page, to enlarge it.
Main thing I'm pointing out here, are the Electrolytic Capacitors.
The large one's on the left side, are used in the Input Stage.
The smaller one's on the right are in the Output Stage.
This IS NOT, an invite to open your Power Supply!! Read the info at the end of this solution)

Electrolytic Capacitors can fail. When they do, you have a failed voltage power rail, or more than one.

ALL the lights used in your computer use less than 1 Watt.
EACH fan uses 2 to 3 Watts.
A typical Processor uses 55 to 125 watts.
Depends on what Processor it is.

[The MSI K8N Neo Platinum motherboard has a Socket 754 processor socket. Uses AMD Athlon 64 processors.

An AMD Athlon 64 processor that fits a Socket 754, can use 51 to 89 Watts.
Again, it depends on which Athlon 64 processor it is)

Use another Compatible, Known to be Good, power supply for a test.
When you have conclusive proof that it is a bad power supply, replace it.

As stated, Do Not open your power supply to try to fix the problem.
The Electrolytic Capacitors inside, can hold a charge for Weeks, sometimes Months!

Should your fingers touch the terminals on the bottom of a capacitor, OR, touch a circuit that one or more capacitors are in,
the Charge could be released to YOU!

Shock ranges from BAD to FATAL!

Best method is to use a substitute power supply for a test.
Be Safe.

Jan 10, 2010 | Computers & Internet

1 Answer

MSI KT3 Ultra2-R Motherboard

Sep 26, 2007 | MSI KT3 Ultra2-R Motherboard

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