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Motherboard won't stay running

Forum Motherboards & Memory : General Motherboard - Motherboard won't stay running

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Anonymous   03-19-2009 at 03:00:44 AM

I have an intel dq965gf motherboard. all of the sudden it stopped running. Now when it is plugged in, the cpu fan starts up for a second then shuts off. The green power light is on and the red light comes on with the fan then shuts of with it too. This keeps repeating until I unplug it. Also, if I remove the 2x2 12v connector, it will stay on but I get no post or anything, but the cpu stays on. When I remove the 2x2, it then goes back to on, off. Is it the motherboard? I've tried different power supplies and I get the same result. Can I fix the motherboard?

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festerovic   03-25-2009 at 05:36:03 PM
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Are you sure the heatsink is properly mounted.

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maggit13   03-31-2009 at 01:58:58 PM
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Yes, the computer was running for about a year then suddenly it stopped, an now this is happening. I've tested everything i can think of. Is it a lost cause at this point?

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festerovic   03-31-2009 at 06:16:30 PM
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Have you tried disconnecting ALL the parts of the motherboard? By that I mean: disconnect all hard drives/optical drives and their power cables, remove floppy cable/power, remove all expansion cards (except video if you have one). Make sure all USB cables are removed.

Try removing the battery on the mobo for a bit. Make sure the power to the power supply is unplugged or it won't clear the CMOS. Maybe even get a new battery, they are cheap and found at grocery stores now. Also try removing all RAM, and then install a different stick of RAM in the first slot only.

Get some compressed air and blast the heatsink. If none of these tasks change up anything, it might be time for a new mobo. I would normally suspect PSU, but you said you tried with multiple.

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maggit13   04-01-2009 at 02:42:57 PM
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I did all of that. i took the motherboard out and started up that way.
I did some research and found that the heat sink I have on there does not say Pentium 4 support. It looks pretty much like the right one but I ordered another one anyway. Can that make a difference?

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festerovic   04-01-2009 at 06:48:19 PM
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Well, my original thought when I read the first post was "That sounds like an overheating/bad heatsink issue". But it has worked fine for a year. Have you ever checked the temps of the CPU while the computer is in use (not BIOS)? You might have slow cooked the chip by running high temps for a long time.

What model CPU do you have?

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maggit13   04-01-2009 at 06:57:27 PM
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it's a new cpu, p4 530J, which is doing the same thing as the last cpu that was in it.

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