Question about Intel Desktop Board D845EPI Motherboard

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Tower won't turn on

I have a tower that won't turn on, no fans running but the led light turns on on the motherboard is it the power supply how do i test it

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  • anjelyc Mar 24, 2009

    The tower smelled like it was burning rubber, we turned it off and took the dust out. Turned it back on and the smell was still there, and it just shut off. I took everything off (USB & such) and plugged it back in - the light turns on then when u try to power on, it turns off. The fan in the tower turns over but does not continue to spin.

  • chelso555 Apr 23, 2009

    Yes I have the same problem as well... I have tried a new power switch and power supply and the only thing that I notice that has any sort of power would be the little green LED light next to the processor? Any suggestions this is a clients computer haha. trying to save some money here.

    Thanks


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If it's the type of power supply that has a 4 prong cable that goes into your motherboard, and you remove that, and the fans turn on, I'm afraid it's the motherboard has a short in it. If they don't, double-check that your cable is tight in the back of the power supply, where it goes from the wall into the power supply. Sometimes they will be loose, and won't work completely, but will have only one or 2 power lines connectd, so there is your power light.

Posted on Sep 12, 2009

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1 Answer

Wont power up


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To narrow the problem remove the power supply to the unit then get a small wire to short the green and black wire it is the switch of the power supply, if you do this and the power supply power up, to know that the power supply power up, look at the fan it will turn on.

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* beeping is all about processor,try to clean the surface and check the heatsink if still have a paste on it or change the processor for trial and check if the problem is still they same.

* also check the powers supply,voltage might get open. That's why power failure occur.

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When i press power on power supply turn on but power led is orange should be green , prosser fan works but prosser not work correctly , i put this prosser in another computer works very good rams and...


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When I start, the powerled flicks (blinks) and the puter won't start. Running XP with 2 x- 512 mb of ram


Bad Power Supply. Weak voltage power rail. (Or power rails in this case)

Ordinarily a Power Supply that is bad will at least light LED lights, and maybe spin fans, but will not have enough power to turn the Processor on.

1) ALL of the LED lights on at one time, use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts.

3) A typical Processor can use 51 to 125 Watts. Depends on what Processor it is.

[ Asus P4P800-MX? Can support up to an Intel Pentium 4 Extreme Edition at 3.40GHz.
109.6 Watts,

http://en.wikipedia.org/wiki/List_of_Intel_Pentium_4_microprocessors#Prescott_2M_.2890_nm.29

Replace the Power Supply.
Is this in a pre-built computer, or one you built?

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Make sure that the motherboard LED switch on the back panel is set to off and if want to turn it on go into bios and set it. If it is active thru switch and not thru motherboard bios it will not allow you to turn on PC cause it is in maintenance mode.

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i had this problem before also...how old is your power supply?

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1 Answer

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First, try replacing the power supply. If this does not work then the motherboard will need to be replaced.

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