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computer keeps turning off and on by itself

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Old 08-07-2012, 02:28 PM   #1
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my computer has been shutting down without any warning and turning itself on whenever it feels like it, i brought a new motherboard to see if it was the motherboard causing the problem, but it still keeps shutting down and turning on, i dont know what to do, or how to fix.

heres my computer

AMD Phenom(tm) 8450 Triple-Core Processor 2.10GHz
2047 MB RAM
32-bit Operating System
Nvidia GeForece GT 520
ASROCK AM2+ N68C-S UCC
i dont know how to find the wattage :(

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Old 08-07-2012, 02:35 PM   #2
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Remove the case side and look at the label affixed to the PSU for the Brand & Model Number.
Brand of the GT 520?
Brand & specs of the RAM?
Does it shut completely down and does it immediately restart after the shut down?

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Old 08-07-2012, 02:47 PM   #3
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on the psu, it says
AC INPUT:220-230V , 2 A 50Hz
115W Max
Total output continuous shall not exceed 250watts

Brand of the GT 520
Sparkle.

Brand and specs of the RAM.
Well it says samsung and it also says
1GB 1Rx8 PC2-6400u-666-12-ZZ
and i got to of those

And it does completely shut down but it doesn't immediately restart after, sometimes i can be on my pc for 10 minutes or an hour and then it shuts down.
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Old 08-07-2012, 05:33 PM   #4
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The PSU would be the primary suspect. It's too underpowered for any GPU.
We commonly recommend a 550W good quality PSU as a minimum for a PCI-E GPU but you could get by with this PSU for a GT 250: Newegg.com - SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply
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Old 08-07-2012, 05:41 PM   #5
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Thanks there! I checked it out but does it matter about the overall size of the psu?
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Old 08-07-2012, 05:54 PM   #6
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Oh yes, I forgot, this all began before I installed my graphics card, and its still happening after
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Old 08-07-2012, 07:48 PM   #7
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Quote:
Originally Posted by reinoso View Post
Thanks there! I checked it out but does it matter about the overall size of the psu?
I assume you're referring to the physical size of the PSU?
Your asrock am2+ n68c-s ucc Mobo is ATX so you have to be using a Mid-Tower case minimum and any ATX PSU will fit inside.
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Old 08-07-2012, 07:53 PM   #8
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Thanks! And one more thing, do you know a better cpu that can be used on this motherboard? My cpu at the moment is old and I want a better performance. Any reccomendations?
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Old 08-08-2012, 07:46 AM   #9
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CPU support list for the asrock am2+ n68c-s ucc : ASRock > Products > N68C-S UCC
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Old 08-08-2012, 08:19 AM   #10
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Thanks! I'll let you know if it works, thanks for the advice and help!
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Old 08-08-2012, 08:28 AM   #11
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Oh yes, one more thing, can this motherboard take a 64bit processor, for instance the Phenom II X6? if so, does that mean i have to download a 64 bit windows?

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