K9N Neo-F Freeze and restart problem. Help needed!

Question

Hi there,
I recently bought a Mainboard (K9N Neo-F S/N: 601-7260-010K0605023133) that seems to shutdown every now and then. No blue screen... it just freezes for a while and then shuts down. My CPU temperature is very low, I've used a lot of coolingpaste and I have tried every possible way of mounting memorys... 1,2,4... and in different slots. I've run Memtest also. The BIOS-version is the newest according to the Liveupdate-function. The power supply should be enough but I have tested disconnecting everything else then one harddrive and the mobo... doesn't work.
Sometimes it happens with three hours between the occations and sometimes five minutes. Not related to anything special that is done on the computer.
Is this a problem that is common...? Related to hardware or bios...? I would be glad for any advice you could give.
Thanks in advance. Really need help... this drives me mad...
/Christian

Answer 1

I started Orthos and then left the computer alone. Went and watched a film, when I got back after 1 hour and 38 minutes or something like that the computer freezed. I will try leaving it on all night without touching a thing... kind of strange that it happens right when I sit down and move the mouse.
Thanks a lot for trying to help... it's appreciated.
Here's the log:
Type: Large, in-place FFTs - stress some RAM Min: 128 Max: 1024 InPlace: Yes Mem: 8 Time: 15
CPU: 2211MHz FSB: 200MHz [201MHz x 11.0 est.]
CPU: 2211MHz FSB: 0MHz [0MHz x 0.0 est.]
2006-10-16 21:23
Launching 2 threads...
1:Using CPU #0
2:Using CPU #1
1:Beginning a continuous self-test to check your computer.
2:Beginning a continuous self-test to check your computer.
1:Press Stop to end this test.
2:Press Stop to end this test.
1:Test 1, 4000 Lucas-Lehmer iterations of M19922945 using 1024K FFT length.
2:Test 1, 4000 Lucas-Lehmer iterations of M19922945 using 1024K FFT length.
1:Test 2, 4000 Lucas-Lehmer iterations of M19922943 using 1024K FFT length.
2:Test 2, 4000 Lucas-Lehmer iterations of M19922943 using 1024K FFT length.
1:Test 3, 4000 Lucas-Lehmer iterations of M19374367 using 1024K FFT length.
2:Test 3, 4000 Lucas-Lehmer iterations of M19374367 using 1024K FFT length.
1:Test 4, 4000 Lucas-Lehmer iterations of M19174369 using 1024K FFT length.
2:Test 4, 4000 Lucas-Lehmer iterations of M19174369 using 1024K FFT length.
1:Test 5, 4000 Lucas-Lehmer iterations of M18874369 using 1024K FFT length.
2:Test 5, 4000 Lucas-Lehmer iterations of M18874369 using 1024K FFT length.
1:Self-test 1024K passed!
1:Test 1, 4500 Lucas-Lehmer iterations of M17432577 using 896K FFT length.
2:Self-test 1024K passed!
2:Test 1, 4500 Lucas-Lehmer iterations of M17432577 using 896K FFT length.
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1:Test 4, 4500 Lucas-Lehmer iterations of M16815071 using 896K FFT length.
2:Test 4, 4500 Lucas-Lehmer iterations of M16815071 using 896K FFT length.
1:Self-test 896K passed!
1:Test 1, 5300 Lucas-Lehmer iterations of M14942209 using 768K FFT length.
2:Self-test 896K passed!
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1:Test 4, 5300 Lucas-Lehmer iterations of M14155775 using 768K FFT length.
2:Test 4, 5300 Lucas-Lehmer iterations of M14155775 using 768K FFT length.
1:Self-test 768K passed!
1:Test 1, 6500 Lucas-Lehmer iterations of M12451841 using 640K FFT length.
2:Self-test 768K passed!
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1:Test 2, 6500 Lucas-Lehmer iterations of M12451839 using 640K FFT length.
2:Test 2, 6500 Lucas-Lehmer iterations of M12451839 using 640K FFT length.
1:Test 3, 6500 Lucas-Lehmer iterations of M12196481 using 640K FFT length.
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2:Test 4, 6500 Lucas-Lehmer iterations of M11796481 using 640K FFT length.
1:Test 4, 6500 Lucas-Lehmer iterations of M11796481 using 640K FFT length.
1:Test 5, 6500 Lucas-Lehmer iterations of M11796479 using 640K FFT length.
2:Test 5, 6500 Lucas-Lehmer iterations of M11796479 using 640K FFT length.
1:Self-test 640K passed!
1:Test 1, 7800 Lucas-Lehmer iterations of M9961473 using 512K FFT length.
2:Self-test 640K passed!
2:Test 1, 7800 Lucas-Lehmer iterations of M9961473 using 512K FFT length.
1:Test 2, 7800 Lucas-Lehmer iterations of M9961471 using 512K FFT length.
2:Test 2, 7800 Lucas-Lehmer iterations of M9961471 using 512K FFT length.
1:Test 3, 7800 Lucas-Lehmer iterations of M9837183 using 512K FFT length.
2:Test 3, 7800 Lucas-Lehmer iterations of M9837183 using 512K FFT length.
1:Test 4, 7800 Lucas-Lehmer iterations of M9737185 using 512K FFT length.
2:Test 4, 7800 Lucas-Lehmer iterations of M9737185 using 512K FFT length.
1:Test 5, 7800 Lucas-Lehmer iterations of M9537183 using 512K FFT length.
2:Test 5, 7800 Lucas-Lehmer iterations of M9537183 using 512K FFT length.
1:Self-test 512K passed!
1:Test 1, 9000 Lucas-Lehmer iterations of M8716289 using 448K FFT length.
2:Self-test 512K passed!
2:Test 1, 9000 Lucas-Lehmer iterations of M8716289 using 448K FFT length.
1:Test 2, 9000 Lucas-Lehmer iterations of M8716287 using 448K FFT length.
2:Test 2, 9000 Lucas-Lehmer iterations of M8716287 using 448K FFT length.
1:Test 3, 9000 Lucas-Lehmer iterations of M8516289 using 448K FFT length.
2:Test 3, 9000 Lucas-Lehmer iterations of M8516289 using 448K FFT length.
1:Test 4, 9000 Lucas-Lehmer iterations of M8316287 using 448K FFT length.
2:Test 4, 9000 Lucas-Lehmer iterations of M8316287 using 448K FFT length.