Is Intel motherboard faulty?

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Is Intel motherboard faulty?

Postby jethro01 » Mon Dec 17, 2007 6:34 am

After building a new computer for my church and running it for a little over 40 hours (not conseecutively), The computer had decided to show the following problem. Using OS XP 64 bit, the computer first locked up at present screen with no keyboard or mouse response. Rebooted computer and it never makes it to video post/bios post screen for monitor. In less than 4 seconds computer would auto shut off and reboot by itself in 2 seconds. Swapped powers supplies with same occurence. Started removing each independent peripheral device (hard drive, floppy drive, dvd drive, fans, RAM, and last video card), still occurs with same problem. Be assured that even though I had no video source I left CPU fan hooked up and could see it shut off and turn back on. Last I removed the CPU and of course the power supply will not turn on. I do not have a spare motherboard nor CPU to swap and check as they are Intel quad 4. Turning each of these power up and down sessions after each device was removed, the power up and down times would increase slightly, or by a quarter of a second or so, but never long enough for video. Also Their was no bios beeps to help troubleshoot during this entire troubleshooting period. I have the following motherboard and CPU:
Motherboard: Intel BOXP965LTCK
CPU: Intel Core 2 Quad Q6600 Kentsfield 2.4GHz LGA 775 Quad Core BX80562Q6600

Any suggestions? :roll:
Thanks
jethro01
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Postby evasive » Mon Dec 17, 2007 7:12 am

Please list the complete hardware setup of this system, the memory sticks in particular.
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Postby jethro01 » Mon Dec 17, 2007 7:07 pm

The RAM is: G.SKILL 2GB 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)

At G.SKILL this is what was recommended for the Intel board (2 each)

BTW here is the order of testing
1. Removed power and ribbon cable of HD.
2. Removed power and ribbon cable of floppy.
3. Removed power and ribbon of DVD drive.
4. Removed Video card.... EVGA 256-P2-N751-TR GeForce 8600GT 256MB
128-bit GDDR3 PCI Express x16
5. Unplugged all case fans.
6. Removed motherboard from case and set on quilt for remaining test.
7. Plugged back in 24 pin powers supply and 4 pin +12V supply into
motherboard with same power on off times.
8. Disconnected both SDRAM's. Stilll powering on and off. BTW the power
on/off happens by itself, I do not need to short out Power-on pins to
turn on.
9. Removed CPU and it's fan, no automatic Power-on with this, but am I
right... it should not power up at all with no cpu... also throughout all of
above testing no BIOS beeps anytime! Psuedo speaker is mounted.
10. I have A+ certification for last 10 years and working on computers
for a total of +15 years within work place home, friends and upkeep
at church. I have never run into this before with exception of thermal
paste not properly applied on CPU/FAN, but never with this short
duration of auto start shut-off before.

Thanks if you can help!
jethro01
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Postby jethro01 » Mon Dec 17, 2007 7:17 pm

Forgot complete list of hardware

Intel BOXDP965LTCK LGA 775 Intel P965 Express ATX Intel Motherboard - Retail

Intel Core 2 Quad Q6600 Kentsfield 2.4GHz LGA 775 Quad-Core Processor Model BX80562Q6600 - Retail

G.SKILL 2GB 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) 2 each

ZALMAN CNPS9500 LED 92mm 2 Ball Cooling Fan with Heatsink - Retail

Thermaltake Purepower RX W0144RU ATX12V / EPS12V 600W Power Supply

EVGA 256-P2-N751-TR GeForce 8600GT 256MB 128-bit GDDR3 PCI Express x16

Western Digital Caviar SE WD3200AAJS 320GB 7200 RPM 8MB Cache SATA 3.0Gb/s Hard Drive - OEM

Pioneer Black 18X DVD Burner - OEM

SONY Black 1.44MB 3.5" Internal Floppy Drive Model MPF920 Black - OEM

That it! Hope it helps!!
jethro01
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