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how to find why computer does not power up

Tags:
  • Power Up
  • how-to
  • Systems
  • Power
  • Computers
Last response: in Systems
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July 15, 2013 6:12:43 AM

Hi,
How can i test what failed, power suply , cpu or mothermoard?
What happend:
I was playing and my computer shutdown. Every time I trie to power up, it fails. The power ligth turns on for a few seconds then dims slowly until shutdown, then it tries to power up but fail again. I heard a sound of the fans starting to spin but only for a second.

my spescs:
i7 2600k at 4.2GHz
asus z77 pro4
7870 in crossfire (xfx dd && diamond GHZ Edition)
600W power suply
16GB 1800GHz ram

my temps:
ambient: around 30C
CPU: 45C iddle about 70C on load
GPU: 50C iddle about 80C on load

PD: excuse for my english it's not my native language

More about : find computer power

Best solution

July 15, 2013 6:22:51 AM

First of all, open the case and check all the cabling. Then;

Im pretty sure the cpu and gpu is just fine, usually they are the 1st pieces to throttle to be saved from high current. However, capacitors and/or regulators on mobo and psu worn out easier than other stuff... According to what you are describing sounds like psu anyways... Just try to borrow a psu from someone and try. Its the easiest way...
good luck!
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July 15, 2013 6:35:36 AM

thanks, I will borrow a PSU and test my system tonigth
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July 16, 2013 12:40:54 PM

n1ghtr4v3n said:
First of all, open the case and check all the cabling. Then;

Im pretty sure the cpu and gpu is just fine, usually they are the 1st pieces to throttle to be saved from high current. However, capacitors and/or regulators on mobo and psu worn out easier than other stuff... According to what you are describing sounds like psu anyways... Just try to borrow a psu from someone and try. Its the easiest way...
good luck!

thanks, I checked all the cabling and two pins of the motherboard extension were burned. I removed the leftovers of the pins and the system is up again. But how this happened witout damaging the mobo or the psu? How can I prevent this?

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July 17, 2013 5:31:15 AM

could be because of a bad psu output and it could be oxidation instead burning, which is caused by bad or cut isolation of the cabling. just replace the cables and lets see if it happens again. sometimes it happens, I guess...
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July 17, 2013 6:18:21 AM

n1ghtr4v3n said:
could be because of a bad psu output and it could be oxidation instead burning, which is caused by bad or cut isolation of the cabling. just replace the cables and lets see if it happens again. sometimes it happens, I guess...


thanks, I have already disposed the extension, and I looking for a new one.
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