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Computer Won't Boot, Lights Flash Once Then Nothing Happens


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#1 darkcowmoo

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Posted 16 November 2007 - 08:55 PM

Hello,

Computer Specs:

Motherboard: Gigabyte M55-SLI 4
Processor: AMD 64 x2 4200+ 2.2 GHz
Video card: e-GeForce 8800 GTS
HDD: 40 GB Seagate IDE - master
120 GB Seagate IDE - slave
RAM: 2 GB (2x1GB) A-DATA DDR2 800
PSU: Zumax X3 series ZU-550w
OS: Windows XP Proffessional

This system worked for about 1 week and today it does as the title says. I push the power button on the front panel of the case and the LED lights for the HDD flash on then off one time, the same for the PSU fan in the back. In order to get the lights to flash again I have to depress the power button in front for 10 seconds or remove the power cable, turn the PSU off, plug the power cable back in and then turn the PSU on. This lead me to believe that something is making the PSU shut itself off, but I can't figure out what. There's nothing that could cause a short that I can see, and there wasn't any kind of power surge earlier.

Also, my mouse is getting power, and the ethernet LED in the back flashes once when I turn the PSU on with the power cable in.

Any kind of help would be appreciated.

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#2 Robert Isbell

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Posted 16 November 2007 - 10:56 PM

try pulling the power cord, and removing the battry, let it sit for 10 minuted, replace battery, plug power in and try booting it up. if it bootd go in and readjust the settings and boot order,etc..

#3 darkcowmoo

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Posted 16 November 2007 - 11:58 PM

Nope, didn't work.

#4 Robert Isbell

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Posted 17 November 2007 - 01:17 AM

Okay, I need some info.

PSU Manufacturer and Model:
Motherboard Manufacturer with Model and BIOS Revision:
CPU Manufacturer and Model:
RAM Manufacturer and Model:
CDRW/CDROM/DVD Manufacturer and Model:
HDD(s): Manufacturer and Model:
Video Card: Manufacturer and Model:

and any other components that are using the PSU for power.

Edited by Robert Isbell, 17 November 2007 - 01:22 AM.


#5 dc3

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Posted 17 November 2007 - 03:11 AM

Did you use thermal compound when you put the heat sink on your CPU, and is the fan securely attached? Do you have another PSU that you can use to see if the one your using is at fault? I'm guessing that you have already gone back over all of your connections and made sure that all of the RAM and cards are properly seated?

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#6 darkcowmoo

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Posted 17 November 2007 - 12:22 PM

I've got Arctic Silver 5 on there and the heat sink is nice and secure, same with the fan on top. The only other PSU I have is dead from another system, and all the connections are good.

#7 darkcowmoo

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Posted 17 November 2007 - 06:50 PM

Problem identified. Motherboard dead.

#8 Sneakycyber

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Posted 18 November 2007 - 07:36 PM

Sorry to hear the bad news. But glad you got it solved. Thanks for posting your solutions. How did you determine it was a bad motherboard?

Chad Mockensturm 

Systems and Network Engineer

Certified CompTia Network +, A +





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