Question about Intel DG31PR Motherboard

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I can't get this thing to POST

I have tried 2 different ATX power supplies, everything is seated correctly, like the others I have read, the fans power up and hard drives spin, just no POST, with on board video or adapter card.

Thanks for any help. I read someone said something about a BIOS upgrade, but how can I upgrade BIOS without seeing my anything on my monitor?

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Hi just to double check are you using the correct processor and ram supported by your mobo . These mobos are designed to support only a few types of memory . Since you do not hear any audible beeps of POST progress check the processor and also have you plugged all the power connectors properly to the mobo from the PS.

Posted on May 28, 2008

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Posted on Jan 02, 2017

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No power from gigabyte motherboard


Nope

Just basic diagnostic tools

First thing to check IS the Power Supply.
Then the diagnosis goes on.

So far all you have told me is an assumption. You ASSUME the Power Supply is OK.

Don't.

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 Processor can draw from 51 to 125 Watts of power.
Just depends on what Processor it is,

By having JUST the CPU on the motherboard, and the fan on the Power Supply doesn't work; you have just PROVED that.

Do you have a multimeter?
An economical one can be purchased for as little as $5 to $12.
Available in a multitude of stores.

There are 3 main voltages to check. Check while PSU is plugged into mobo. (Power Supply Unit; MOtherBOard)

A) 3.3 Volts
B) 5 Volts
C) 12 Volts
All are DC Voltage. (Dotted line over a solid line for Multimeter)

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

The Orange wires are 3.3 Volts
The Red wires are 5 Volts
The Yellow wires are 12 Volts. All are DC Voltage. (DCV)

The 24-pin ATX main power cable is left plugged into the mobo.
The BACK of the power cable's connector; is where the wires go in.

Power Supply unplugged from power; a straightened out paperclip is inserted down into the socket hole with an Orange wire in it.
The paperclip slides down alongside the insulation of the Orange wire, and touches a metal female terminal.

Every wire going into the 24-pin ATX main power cable's connector, ends in a Molex female metal terminal,

http://www.molex.com/molex/products/datasheet.jsp?part=active/0002081202_CRIMP_TERMINALS.xml&channel=Products&Lang=en-US

The brass tip openings can be seen, in the Playtool link's middle photo. (Tip openings; Front. Paperclip touches Back)
MUST touch that metal terminal.

Another paperclip is slid down into ANY socket hole, with a Black wires in it.
ALL Black wires are Ground wires.

Making sure the paperclip jumper wires, are of the correct length by cutting; there is no way they will accidentally touch each other.

Positive (Red) probe lead of multimeter to Orange wire paperclip;
Negative (Black) probe lead of multimeter to Black wire paperclip.
You should read 3.3 Volts (DC)

Do the same for the Red - 5 Volt wire. Red wire and Black wire.
12 Volt - Yellow wire and Black wire.

Post back in a Comment.
Regards,
joecoolvette

On another note;
Did you just recently mount the mobo to the computer case?
Did you use metal Standoff's, or plastic Spacers?
(Standoff - Hex shaped brass piece, usually 1/2 inch tall; and with a threaded hole on one end, and a threaded shaft on the other)

The Support Plate can be a separate metal plate; or is an integral part of the computer case.

IF, there is a Standoff on the Support Plate, that is NOT lined up to a motherboard mounting hole, it can touch exposed solder joints on the bottom of the motherboard.

This will short circuit the motherboard. MOST of the time when the 'offending' Standoff is removed; everything is OK.

Dec 25, 2012 | Computers & Internet

1 Answer

My husband recently built a new computer (previously built 5 others successfully). Motherboard seems to be working properly. Green LED lit. Graphics card works in another computer. Power supply...


Hi, the thing to do here is to narrow down what could be causing the problem, initial suspects would be the RAM chips. If you have known working ones you can try in it, try these, if not, try without one, then swap them over, or even try without both.

Also, remove any components that aren't strictly necessary, i.e. hard drives & cables, cd-rom/dvd drives, extra PCI cards,network cards etc

Another suspect may be just a loose connection, try taking everything out, re-seating it. Again, pay particular attention to the RAM chips.

It could possibly even be a faulty processor, have you another you could try? Try taking it out and re-seating it.

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Installed a Graphics Card on my Emachine. Made sure it is in the PCIX slot correctly and seated right. I also installed a Power adapter cable (20 PIN - 24 PIN ATX) to utilize the other 4 pins for use with...


Sounds like there isnt enough power even with the adapters your powersupply cannot give you enough sustained power to run the system if you take the card out does it boot normally? even just disconnecting the power to the card?

Mar 26, 2011 | E-Machines W6409 (7234) PC Desktop

2 Answers

My computer froze up one day. The green light on the mobo stays lit all the time now. I've replaced the cpu, RAM and tried different video cards, but it still won't boot up. I even got a different ASUS...


Hi,

I think you have just about covered everything by testing the hardware out on a different system. The only vital thing that you haven't checked is the PSU (Power Supply Unit).

Get another power supply of the same type and try that in your system as faulty PSU's can cause these problems even though the motherboard is showing that power is being received, it could be showing a false positive.



Please let me know how you get on and if i can provide anymore assistance.



Regards.

May 28, 2010 | ASUS K8V-MX Motherboard

1 Answer

Smells like hot electrical from the power supply. which way should the round fan face in the case? Towards the motherboard or out the top. Ran system check, it is not hot. I thought it might be new and...


Is this a new ATX switch mode power supply?
If the ATX power supply is old then the capacitors may leak and overheat to give a burn't smell. I would not advise you to try and repair these power supplies, they operate with dangerous mains voltages inside the case.
The ATX power supply has standard mountings holes that line up with the desktop case and can only be fixed to the case in one position.
If you have overheating problems you can add addition 12volt fan inside case, The fan should be positioned to draw air into the case.

Dec 04, 2009 | Dynex 400-Watt ATX CPU Power Supply

1 Answer

Computer won't boot up


Have you tried a higher rated ATX power supply? Preferably a 350w.

Apr 22, 2009 | ASUS SiS Chipset TUSI-M Motherboard

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Abit IP95 Mobo fails to power up.


Ok, try connecting just one thing at a time - start of with just your board and the power supply... still smell burning? There's probably an issue with the power supply - no fans & leds would indicate this too (can you hear anything when you power up?)

What cooling have you been using - weird quetion, but is there any chance there could be moisture on the board? (either from water cooling or from condensation in the room)

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1 Answer

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Well, it sounds like it is a mobo problem if u tryed other power supplys, i would test the 4-pin ATX slot in ur mo and see if it is grouding this or shoting it out, umfortualyy u will problem have to have that done professionaly

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2 Answers

Intel Media Series Intel G33 chipset micro atx no post no boot after crazy fan


make sure you have seated all the cards properly, take them out and reseat them including the ram. Make sure your IDE cables are plugged in properly as well.
Restart the computer and if still no post then yes unfortunatly for you its the mobo =(

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2 Answers

Power but doesnt start


Sounds like you are not getting a "power good" signal from the mobo telling the power supply to turn on. Something is probably wrong with the configuration or installation of parts. Try removing the RAM and all interface connectors and then see if will power up.
Make sure the power supply is set to the correct A/C voltage for your reigon.
Could be the motherboard is cmoing into contact with the chassis or something else.
Make sure the processor is inserted correctly and seated.

If it powers up. begin connecting the RAM and try again. Keep connecting something else one at a time until it fails. That will be the problem.

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