Shuttle AK38N motherboard problem:

August 19, 2010 at 10:33:09
Specs: Windows XP
the computer makes a laud Siren type sound,
ive just Installed the new Mainboard,
tryed everything, but everytime i switch it on,
the computer lasts just a few seconds, Then switches itself off again,
the alarm starts up, Very laud,

What is wrong,?

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August 19, 2010 at 14:37:40
The CPU is overheating. The siren is a warning, then the system shuts down before the CPU fries. Check your heatsink installation. You only need a tiny dab of paste in the center of the core, then spread it thinly & evenly across the core ONLY. The heatsink can be installed backwards...if that happens, it doesn't make full contact with the CPU core. Heres a few links that should help:

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August 20, 2010 at 04:08:33
thankyou for your reply,
I will examin the heatsink more closely.
i have orded some special heat-transfer past
but i think the CPU might be defect,
But i also tried 2 CPUs, both the same.
nothing works,
But i will try again what you said.
also i will try a new SDR module
but the board should start up without
and not give a warning, with nothing connected,
it should not give any warning signals.

thats what the Shuttle website says.
Ive tried, Two PSUs, both dont seme to improve the situation
the 300WAT, and 250 WAT.
i think maybe i need a 600 WAT new PSU.
but thats maybe extravagant.
I think the Main Board is Defect
But i can't Know for sure.
Thank you for your help and advice

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August 24, 2010 at 02:15:08
about the main board,
shuttle AK38N,
i found that When I take out the Dim 2 ,
leaving only Dim1 And Dim 3 In the slots.
the Alarm goes away,
computer still does not boot up.
putting RAM back, with Dim1 only,
start up , i get the Alarm,
and LED on-board, CPU system Overheat,
i will install, a new CPU with Heatsink cooler, with heat transfer Past.

and try again.
Someone said to me,
it's the Ram 333MHz DDR333
it's a 184-pin PC2700 (DDR333
it may be the clock Freqence set syncronus RAM setting
for the CPU,

If i find the Answer I will post it


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August 24, 2010 at 05:04:20
Its Working!!!!

its seems I'm posting to myself!!
for anyone who has interest,
I found, the both CPU's I had Were Defect.

I only found this out by replacing the CPU, (AMD Athlon XP)

i used the Heat transfer past on the cooler & Cpu.

the systems Boots up, and i have access to BIO's

so the Board is working Great.

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