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computer loses power


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#1 lobotomy-

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Posted 16 December 2011 - 03:31 PM

a few weeks ago I bought a NAS (asrock motherboard with atom intel cpu, 4 gb ram, 1.5tb hard disk, case with external psu adapter)

sometimes randomly, it loses power.
then when I try to boot it, the speaker makes a very short sound and it wont continue starting up after 5 seconds. I dont get a boot screen..
When I wait for some time, I can boot it again, but then after some time it shuts down again.
I think its due to the power supply which has some possible interference with other cables (I plugged the NAS in on a separate plug, and it didnt shut down for a longer time, but still it did).

So when it shuts down, I cant boot it again.. But when I switch the HDD Sata connection to the other connector, it will start again.

OS: Ubuntu server

any ideas?

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#2 computerxpds

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Posted 16 December 2011 - 03:46 PM

Hello there,

Does it have a warrenty? Because that sounds like an issue with the PSU. But in any case I shall try to help you troubleshoot to see if it could be something else.

But when I switch the HDD Sata connection to the other connector, it will start again.

Does it stay running just fine when you do this?

Edited by computerxpds, 16 December 2011 - 03:46 PM.

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#3 lobotomy-

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Posted 16 December 2011 - 04:28 PM

nope, the same thing happens again.. (will also start again when I switch the sata connector again)

parts:

Asrock AD425PV3 | AD425PV3
LC-Power LC-1380Bmi | LC-1380BMI
MUSTANG RAM DDR3 2GB / 1333Mhz MUSTANG Black Line CL9 Blk
Samsung G3 Station HX-DU015EC 1.5TB Wit | HX-DU015EC/AW2

Edited by lobotomy-, 16 December 2011 - 04:35 PM.


#4 computerxpds

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Posted 16 December 2011 - 04:42 PM

You didnt answer my first question: :)

Does it have a warrenty?


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#5 lobotomy-

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Posted 16 December 2011 - 04:52 PM

yes it does :)

#6 computerxpds

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Posted 16 December 2011 - 05:00 PM

In that case I would return it for a refund or a replacement. No point in trying to fix something that can be returned. :)
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#7 lobotomy-

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Posted 21 December 2011 - 03:19 PM

update:

cause the shop where i bought the pc is about 70 miles away, I tried something different.
The nas ran for 40 mins yesterday, before shutting down.
As soon as I touched the case, it booted again, then shutting down 5 seconds later (this happened 5 times).
I opened the case and disconnected the sata connector, booted again, auto shutdown.
I disconnected the hdd power connector, booted again, auto shutdown, no clicking sound (which I thought came from the speaker). -> HDD was not the problem
removed 2 ram bars, didnt boot (duuh :P)
inserted 1 ram bar (2gb) -> runs fine
inserted hdd, runs fine (uptime 24h now)

so the question is:
- is the ram broken? (but it has run fine with 2 bars of ram for at least 24h?)
- does the ram take that much power that the psu cant handle?
- can a pc shutdown on broken ram?

#8 computerxpds

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Posted 22 December 2011 - 02:53 PM

Try to boot with just the other 1gb ram card and see if it will run fine. Then if it does try two again and see what happens. :)
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#9 lobotomy-

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Posted 23 December 2011 - 03:01 PM

after 2 days of uptime, the problem still persisted.

now im running memtest86.. how many cycles should it take for a reliable outcome?
atm 1 cycle without failures (so maybe it wasnt the ram)

#10 hamluis

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Posted 23 December 2011 - 05:39 PM

Memtest86+ Guide-How To's - Overclockers Forums - http://www.overclockers.com/forums/showthread.php?t=409152

Louis




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