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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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.

Apr 12, 2011 | ASUS M4N75TD AM3 NVIDIA nForce 750a SLI...

2 Answers

I just finished building a PC using motherboard Biostar N68S, but it won't power up. When I push the power button, it only works for 1 second. Everything is connected. What seems to be the problem?


Try to verify these :
1- Check that all perepherals are connected correctly (HDD, Drives...)
2- Check taht the motherboard support the CPU you are using.
2- Check that the RAM is correctly inserted (use an other connection slot)
3- Check that the CPU is correctly inseted and that the FAN is correctly placed
4- Check all USB port, may be there is a short circuit.
5- Check your AC Power.


Good Luck.

Apr 01, 2011 | Biostar N68S NVIDIA MCP68S Socket AM2+/AM2...

1 Answer

Asus M4A785-M will not post. I have completely removed motherboard from case, removed all components except CPU (AMD Phenom II X4) and CPU cooling fan. When power supply (which I tested in seperate...


All I read properly .Please remove power supply from HDD and CD /DVD RW. If you face the same problem Open the mother board on a open place and try it again ,because there are some particles witch has made the short sercit in your M. Board.Cgeack all voldage socket plkaced properly,MAY BE CAN SILLY MISTAKE FOR 4 pin socket .


If you face same problem please install in another mother board .Post me please imediate next result.

Dec 12, 2010 | ASUS M4A785M (890552666775) Motherboard

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

Windows 7 will run for a while then shut down by itself. Then the computer will not post up. Shuts down as soon as the CPU fan kicks in. will come to life every 5 min by itself and shut down again in a few...


Take special notice of the link.

I might have suspected a software issue but as you mentioned no post after the shutdown I do suspect a thremal issue

Your fan speeds up and slows down in response to temperature inside the computer. More so the CPU.

I would suggest getting a can of compressed air made for computers

Take it outside, take of the side and blow all the gunk out of there, Really go to town around the fan (you might want to wear eye protection)
While you are in there just check that the CPU cooler itself is not loose

(NOTE YOUR COOLRER MAY BE DIFFERENT)

If it is it will have to be re-seated.

If it needs re-seating don't just take it off and put it back on as that might make things worse with your temperature problem they have to be cleaned and new thermal grease put on ($2-5)

DON'T remove the CPU just the fan/cooler assembly.

You must clean both the surfaces without scraping anything off. Use isopropynol alcohol and cotton bud sticks until both surfaces are clean, you can use your finger nail to scrape harder residue if you wish but nothing else.

DON'T pour the alcohol over the CPU

Now apply some new thermal grease (most computer shops have it)

Be careful about how much you put on

Here are
some basic instructions

Once you have re-assembled your cooler and re-connected it check everything is OK and power up the computer.

If everything went to plan you should now be back in business
 
Hope this gives you the information you need

Bob
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Dec 07, 2009 | Intel Motherboard Atx S775 ...

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

2 Answers

Troubleshoting on installation of mb foxconn 45cmx


have you placed the 4 pin block to the motherboad and also check the bois clr jumper to see if it's not being shorted this can also cause the board not to boot pluse check ram sticks making sure they are well seated and clean the cntacts from dirt on the ram sticke if al gose well and still no boot then get a converter and try this if all else fail try a ney cpu if same resaults then replace board.

Aug 26, 2008 | Foxconn 45CMX socket LGA775 motherboard...

1 Answer

No post


Hi markpcfixer,
That green diagnostic LED you see on the motherboard is telling you there is power connected to the board. (That's all).
Each time you were able to reach post was from completely disconnecting power from the board. So I can suggest a couple of things. First make sure the board is not grounding through you're case. Is the board screwed onto the stand-offs? Stand-offs are copper looking legs that screw into the case. You lay the board over the copper pegs & screw down the board. Each screw should have a red fiber washer just under the screw so the screws do not short out the board. Nothing under the board should be touching the case other than the back plate.
Once you are sure everything is ok than make sure you added thermal grease between the CPU & heat-sink fan assembly.
Two things left. You're board needs a lot of power. Does you're current power supply include a 24-pin ATX main connector for
PWR2 J2800? (IF no you need a PSU that does). You also must have a 4-pin ATX_12v power connector on PWR1 J2802.
You're system will not boot with out these. You're board also can use up to 6 SATA drives. You're power supply should be no less than 500W. 550W would be better. If you are still unable to boot the system, only than would I consider flashing the bios. You can find that at this link. http://www.sapphiretech.com/us/support/drivers.php
You must pick the correct terms in each window to load the driver & bios page. They are (From left to right), Mainboard Soultions, than IGP Innovation- 780,690 & lastly,
PURE Innovation PI-A9RX480 Than click, Download the Driver
Each time you go there you will need to type this in.
You have swapped out the CPU & memory, the last thing to try is the power supply & bios. There is noting to check after that.

If I can help you further, feel free to post.
Suggestions & comments welcomed.
Mike

May 22, 2008 | Sapphire Technology PURE Innovation...

2 Answers

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)

Feb 09, 2008 | Ziotek ATX Motherboard Standoff, 12 Pk...

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