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Abit KX7-333R + Chieftec PSU: random shutdown problem

Hello,
First of all: don't mind spelling or grammatical errors, I'm Dutch ...
I have a problem with my pc. My current config:
Abit KX7-333R
AMD Athlon TB 1133 mHz
Coolermaster cooler, > 1.4 gHz
Apacer 256 MB PC2100 (266 mHz ram set in bios)
GeForce DDR
SB Live! Player
Level One (Realtec) 10/100 nic
4* Maxtor Diamondmax 40 GB 7200 rpm (2 raid0 arrays).
Pioneer DVD player
Plextor CD-writer
Sony diskdrive

All this hardware (except for 2 Maxtors) worked correct with my previous motherboard, an ECS K7S5A.
But with the new one, I have a freaky problem. Sometimes my pc just turns itself down, like there is a power failure or something. This happens completely at random, sometimes a few seconds after the post, sometimes the pc runs for more than a day !
I have disabled the temperature control in the bios, my processor temp is about 50° C (122° F), my board temp aprox 38° C (100 ° F), My case (Chieftec Maxitower) is constantly open.
Can someone pls help me with this problem ?
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Erikjanssens
Asked:
Erikjanssens
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1 Solution
 
slink9Commented:
Have you tried it with a room fan blowing on the inside of the case?
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ErikjanssensAuthor Commented:
There are already 2 intakefans in front of the 4 hd's, but 50° C isn't really that much for a thunderbird !
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slink9Commented:
What type of power supply?  Is it AMD approved?  You would need at least 300W to run all of that with a TBird.
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slink9Commented:
Are all fans in proper working order?
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ErikjanssensAuthor Commented:
It is a Chieftec 340 watt PSU, all fans are working properly.
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slink9Commented:
Did you install any software before this started happening?  It could be a software conflict or low resources.
What is the OS?
It could also be a hardware conflict.  Break it back to only cpu, memory, video, hard drive, floppy.  Does it still mess up?
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ErikjanssensAuthor Commented:
no, like I said, it isn't a software problem. Sometimes it happens during the post, during the boot (win2k), few hours after booting, ...
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SysExpertCommented:
I would try a new power supply,, since this definitely sounds like a classic PS problem
It shuts down due to an excessive load.
Other options.
Start pulling out hardware, it could be a defective card/motherboard/hard drive.

I hope this helps !

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ErikjanssensAuthor Commented:
already tried pulling out al hardware, except vga card and harddisk. Tried another vga card. all the same. new psu, gonne try that one !
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GriffonCommented:
Try turning off all the power management garbage on the machine if you havent already as this always seems to cause trouble because it might be shutting down into a form of sleep mode even thought it is still on.

Check that all of the jumpers and things are correct on your board and that you are not subconciously over clocking your board.

Make sure the ram etc is set on the right bus speeds.

Try removeing all that you can and see if it works ok without it crashing then.

Be sure that you dont have a virus on the machine that is shutting down the machine.

just some ideas that might help

Griffon
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ErikjanssensAuthor Commented:
turning off al power management: can't be the problem, happens during boot, in windows, in Linux, ...

All jumpers correct, still at factory position
Ram is at right bus speed. (266)
Removing all hardware: been there, done that.
virus: constantly have nav2002 with latest definitions. but virus can't affect win2k, boot, AND linux !
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jlausterCommented:
Did you format your hard drive(s) and install the OS clean after the new motherboard installation? Leftover system hardware files from your old motherboard will cause a large variety of problems.
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ErikjanssensAuthor Commented:
yes I did.
But I think I solved the problem.
My +12v was about 12.4 V, and my +5v about 5.2 V. With my ECS this was no problem, but it seems it is causing trouble with this Abit.
So I adjusted the voltages, now they are about 11.98V and 4.96V, and I haven't had a shutdown yet !
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Kyle SchroederEndpoint EngineerCommented:
Well hopefully that will do it then.  SysExpert recommended a new PSU, fortunately you were able to adjust yours...exactly how did you adjust it?  I've seen BIOS settings for RAM/AGP voltage, but never for PSU.

-dog*
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ErikjanssensAuthor Commented:
It is a Chieftec PSU, I hope you know Chieftec ?
Quality, comparable with Enermax psu's.
On the inside of the PSU you have a small adjustable resistance. With a screwdriver you can adjust the voltages of the +5v and +12v rail.
If you want, I can look for a howto or something, but it is fairly simple.
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Kyle SchroederEndpoint EngineerCommented:
I've heard of them, but they're not terribly common in the US.  Interesting feature though...

-dog*
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ErikjanssensAuthor Commented:
It itsn't a special feature with Chieftec psu's, even with some nameless psu's it is possible.
Chieftec makes great cases !
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Kyle SchroederEndpoint EngineerCommented:
Comment from Erikjanssens  Date: 07/15/2002 03:29PM CDT  
yes I did.
But I think I solved the problem.
My +12v was about 12.4 V, and my +5v about 5.2 V. With my ECS this was no problem, but it seems it is causing trouble with this Abit.
So I adjusted the voltages, now they are about 11.98V and 4.96V, and I haven't had a shutdown yet !  

PAQ/Refund.

-dog*
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