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New Build Shuts Down In 1 Sec

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#1 gannon33


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Posted 09 January 2008 - 02:28 PM

Built a new machine and it shuts down in about a second. I was leaning towards a grounding issue. I have:

Asus P5K

E6750 core2duo

2GB corsair extreme DDR2-800


Antec case with 430W PSU

I got everything set up and mounted mobo in the original case which was a cooler master. Turned on power and immediately it shut down. Though it may be a cooling issue so I removed and applied new thermal grease. Checked to make sure no metal was touching mobo. Started again, still no change. In 1 sec it shut down,before any beeps. I swapped the case and PSU to the Antec as well as swapping the mobo. Before I left the store the tech checked everything out and showed me the mobo was working. I get everything home and mount the board again and we are right back to my problem- press power and it immediately shuts down. I can't see the mobo touching any metal in the case and it is on the brass spacers. I've built at least a dozen or so machines and have never had a problem. At this point not sure what the issue is. Any suggestions are welcome.

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#2 Mr Alpha

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Posted 09 January 2008 - 03:46 PM

Taking it back to minimum seems like the way to go. Take the motherboard out of the case and put it on a non-conductive surface. Make sure you have only the CPU (with HSF), RAM and graphics card installed; and that the needed power cables are connected. Then try starting it and see if it works (you can do it by touching a flat headed screwdriver to the power pins on the motherboard). If it doesn't then one of the essential pieces of hardware isn't working, likely the power supply.
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