Question about MSI 945GCM5 Motherboard

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New motherboard and cpu: no post

I installed the cpu and fan as usual and when I plug the psu in the fan spins briefly and stops, spins breifly and stops.

disconnected everything and still does same thing. I tried different psu and same problem

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I have encountered that kind of problem before in the AMD processor. When your turn on the switch the fan is spins and then suddenly stop. The processor is shorted or there is defective parts you need to return it to the supplier. But can you check first if the motherboard and the processor is match . Maybe the motherboard cannot carry the speed of the processor it's better to ask to the supplier or ask them to test both the processor and motherboard .

Posted on Apr 17, 2008

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Posted on Jan 02, 2017

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I rebuilt computer with new parts, now won't start up. No POST. Power LED lights up, no cpu fans spin, no beeps. Psu works with paper clip test. New mobo, ram, psu, cpu.


Check display without cabinet maybe motherboard getting short with cabinet and try new Power supply check all the power supply connectors connected or not .

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1 LONG BEEP, 2 SHORT BEEP


1 long, 2 short Failure in video system: a checksum error was encountered in video BIOS ROM, or a horizontal retrace failure has been encountered

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1 long beep, 2 short beep


You have a bad RAM, install just 1 module and try, is doesn't swap the memory module and try again.

http://www.gigabyte.com/support-downloads/faq-page.aspx?fid=816

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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

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Connecting my PSU to my Motherboard


The bare essentials to start a computer are PSU, Motherboard, CPU, RAM and Video.

Its possible the PSU arrived DOA. Though I've only had 2 DOA PSU's in the 15 years I've been building custom computers.

Hope this helps.
Mary

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Asrock P4i65G Motherboard


If the CPU is dead the problems can be
  1. no power
  2. no fans etc or
  3. power, no beeps (errors)
If the Ram is not compatible it would be constant beeping.

With the board in, and power supply 20pin + 4pin Pent 4 power attached,(#2 and #7 of motherboard layout) remove power cord from power supply.
CLRCMOS0 allows you to clear the data in CMOS. The data in CMOS includes
system setup information such as system password, date, time, and system
setup parameters. To clear and reset the system parameters to default setup,
please turn off the computer and unplug the power cord from the power
supply. After waiting for 15 seconds, use a jumper cap to short 2 pins on
CLRCMOS0 for 5 seconds. Remove the jumper. Remove heatsink and fan from CPU. disconnect cpu and reseat it. Re-install heatsink and fan. Plug in the power cord. Try to boot up. If it still does not boot and (no power, no fans etc.) problem would then be cpu is fried.



Jun 02, 2008 | Computers & Internet

1 Answer

CPU fan


When you say power is going to the mobo, are
other fans and lights turning on? You also may have forgotten to plug in
the large ATX power cord from the PSU, or the smaller 4-pin rectangular 12V
power cord. Is the correct local voltage setting for your PSU selected (110
or 220)?

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