Question about Intel Motherboard

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Not booting i am using intel d845gvsrl motherboard . when i press power button power led glown within seconds led & cpu Fan off,but led inside motherboard is glown always pls help me to solve this problem

Posted by jifryt on

  • Anonymous Feb 10, 2008

    d845epi/d845gvsr intel desktop board green light by cpu on when you jump #6&8 pins on power up only. when you jump green wire and black wire on 20 pin connecter it fires up the cpu fan. also a red light comes on the front of the board

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rajesh raman

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Check ur mother board power supply check the FET check all the power lines from the smpswith respective of ground with any line short check which component is primerly conected to that line replace it check the FET power IC etc

Posted on Nov 29, 2007

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Show all solution to d945plrn motherboard problem not powering up

PSU IS OK? You're sure? You tested the 3 main voltages coming out?

DON'T rely on; "The LED lights are on, and the fans spin, so therefore the PSU must be good.

1) If ALL the LED lights 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 uses 51 to 125 Watts of power.

With a Power Supply that has a weak voltage power rail, you will see LED's light, and fans spin; BUT not enough power to turn the Processor on.

Power Supply also needs to be plugged into motherboard to test, because you need a Load on the Power Supply.

PSU is KNOWN to be good? I mean KNOWN.
Not, "It's brand new so I know it has to be good"
Okay, moving on.

CPU OK?
How did you test it? Install on another working motherboard?

Are the Electrolytic Capacitors on the motherboard good?

http://capacitorlab.com/visible-failures/index.htm

http://www.youtube.com/watch?v=Lut7MX5Dd_A

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

http://www.hardwaresecrets.com/article/616

Part of what the Motherboard Voltage Regulator Circuit does, is to regulate voltage for the Processor. (CPU)

The CPU MUST have a steady, 'clean', supply of voltage, and it MUST be kept within the Processor's voltage tolerance range.
Too much, or too little, and the CPU shuts off. BIOS turns it off.

(CPU stands for Central Processing Unit. Another term used is Microprocessor, or simply Processor for short.
I know you are aware, just posting for all those who read the solution in the future)

http://downloadmirror.intel.com/15140/eng/D945PLRN_ProductGuide02_English.pdf

[Better motherboard due to the Intel Q965 motherboard chipset,

http://www.ebay.com/itm/INTEL-DQ965GF-CORE-2-DUO-LGA775-SOCKET-P-4-MOTHERBOARD-I-O-FACEPLATE-INCLUDED-/290863623024?_trksid=p2047675.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D11%26meid%3D5685984037376928917%26pid%3D100011%26prg%3D1005%26rk%3D1%26sd%3D330632928551%26

http://en.wikipedia.org/wiki/List_of_intel_chipsets#Core_2_chipsets

Scroll down to Q965 in left column ]

For additional questions please post in a Comment.

Regards,
joecoolvette
0helpful
1answer

The green LED light on the board is lighted. When I push on/off button the CPU fan moves for 1/2 a second .I tried a different power supply, but that did not work. I replaced the CPU fan, but that did not...

Hello here is the homepage:

http://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Desktop+Boards&ProductLine=Intel%C2%AE+3+Series+Chipset+Boards&ProductProduct=Intel%C2%AE+Desktop+Board+DG31PR

Any abnormal beeps at startup ???

http://www.computerhope.com/beep.htm

The problem could be a ram module failing, or the graphic card if installed on the mainboard.
Or a short circuit somewhere.

Look also here:

http://www.tomshardware.co.uk/forum/243625-13-turns-wont-boot

Try starting with only 1 stick of Ram, the monitor and the keyboard connected, no other USBs to be connected.

Look also for bad caps on the mainboard:


1_28_2013_2_50_28_pm.jpg

If they look like this, the mainboard is dead.
It does not pay, to let them be changed.

Good luck
0helpful
1answer

Pc not booting

If you hear the CPU fan turn on that doesn't mean the CPU itself is working. It can be only that the motherboard is getting power. Check all your connections such as monitor and peripherals and re-connect them. If you still don't get P.O.S.T. or ANY letters or boot options on your screen then your CPU is dead. (unless your monitor is bad)
Another easy diagnostic is using your ears. For example the pitch sound of the fan in some motherboards tends to lower and then increase because it's reading of the hard drive. This means your CPU is ok but either your graphics connection is bad or your monitor is.
0helpful
2answers

When i plugged power cable to my pc cpu fan start without press power button

It should start for a few seconds, the fans should spin and then stop. You should be able to power it up as per normal. If that is no the case then you are having hardware issues which could be the Power supply
1helpful
1answer

I am not sure if this is a problem with power supply. Yesterday suddenly my machine stopped working. I wasnt using it. It just shut off. Now when I started the cpu, I see one green LED on the mother...

the problem is in your motherboard..this most cause unregulated flow of power from the source electric..but if the green led is off so its the processor.try to test it with a motherboard tester..or get another board that same spec with the you have,and transfer the processsor if it is working
0helpful
1answer

My ASUS P5QL Pro motherboard will not boot up correctly quite often. I have swapped RAM, power supple, video cards and i made no difference. the last time i pulled the bios battery and the bios chip,...

i had just solved this problem yesterday, there this symptom below please checked.

1.won't boot after power on button 2.LED on motherboard is light

3.unable to BIOS setting screen 4.CPU fan doesn't work


How to solve


i had just solved this problem yesterday, there this symptom below please checked.

1.won't boot after power on button 2.LED on motherboard is light

3.unable to BIOS setting screen 4.CPU fan doesn't work


How to solve

1.Please find this IC on motherboard EPU asp0800 near the CPU Socket

2.Press the IC with finger,at the same time press the power buttom

(If CPU fan is running on short time please do step 3 )
3.Power on your soldering iron and contact each side of this IC about 3 seconds( soldering iron to contact IC lead left to right or right to left)
4.Review each side of IC and check any short between IC lead5.After step 4 done, power on pc again, if PC booting congratulation

6.Final check: put finger on ic top side surface (don't touch the IC lead)feel the temperature if too hot that's mean short between IC

lead,please rechecked step 4

8_14_2012_3_50_32_am.jpg

1helpful
2answers

I have an Intel E210882 mother board. Within a week, it was starting to become hard to boot, then I had to boot in F8 mode, and now when I turn on the power switch, the LEDs light turn on and the cpu fan...

If you have another computer that will hook up to the internet, download a copy of any live Linux CD (UBUNTU) and see if the computer will boot with that (you download a image file that burns to a boot able cd). If it will boot with a live CD, then you have a Hard drive / operating system problem. If it will not boot from that, you have a mother board problem. Start removing things from the motherboard, unplug and remove everything then plug hook up things one at a time.
0helpful
2answers

I have a problem with Intel D845GVSR Motherboard with 2.0 GHz processor. When I power the M/B, only the Motherboard LED is on, but no boot, no cpu fan running. No beep code also. I check the SMPS, RAM,...

Hi,

Think this should be an issue with the power button, Remove the wires running from the power button to MB and try starting the system with shorting the 2 lead of the power button..

Mostly, it can be due to bad power supply or Ram

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RNJ VINODKUMAR
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Intel DG965RY CPU Overheating

Check the clamp of the cooling fan. If the clamp is not engaged, heat sink didn't take the heat away from the micro processor causing CPU over heating.
1helpful
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Problem with installation and no display

Hi alvinkt,

I am using 5450 and it gives me voltage mismatch error and does not boot up, goes straight to BIOS. Is your board revised version with R in the end or pre revision. Could you please help me resolving this error?
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