Coputer Randomly shuts down

November 10, 2017 at 06:14:44
Specs: Windows 10
there is no warning , it just happens then after around 5 sec it turns itself on again . Sometimes it can run for hours and nothing happens and sometimes around a hour to 2 hours after starting PC up

Motherboard : Asus b150 pro
Graphics card : Gtx 285 GB
Ram : 8 GB
CPU : I5-6400 2.7 GHz
Power supply is from Astrum model :GPOWER-500

message edited by MCO3

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November 10, 2017 at 06:51:21
I'm not up on current desktop.tower systems and thus not familiar with critical items such as the psu. One or two others here are very into that aspect so stick around for their more sage-like input too


Presumably this is a desktop/tower system.

A couple of basic things to check.. Is the power cord secure at both ends (presuming it's a standard mains cord) and also not intermittent within its cores?

Has the case/unit been moved around at all? If so have you checked that "all" plug/socket connections within are secure?

How olde is the system?

Are all cooling fans and vent clear of dust etc; not the least on the cpu itself - let alone the psu?

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November 10, 2017 at 09:21:37
this started happening about 3 weeks ago, and i know its not dust since 2 weeks ago i cleaned all the fans and cables are connected properly , my core temps according to Core temp is min 36 , max 43, the pc is on the table on my rightside, not close enought to bump into it but close enough that i can stretch my arm and touch it

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November 10, 2017 at 09:44:54
The usual culprit in this type of situation - presuming fans on cpu etc are OK - is the psu; again presuming the mains/power cord isn't playing up...

As I say above hang in for others with current familiarity with discreet component kit; not the least the psu...

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November 10, 2017 at 11:17:51
Here's your problem: "Power supply is from Astrum model :GPOWER-500". I couldn't find very much about Astrum power supplies from doing a search, but I feel you should never trust a PSU manufacturer that doesn't provide detailed specs.

I came across this site that lists the Astrum 450W for R250:

Since it's a South African site I suspect that "R" = Rand. The conversion = $17.50US. You generally can't get a decent quality 450-500W PSU for twice that much, unless it's on sale and/or there's a rebate involved. For example:

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November 10, 2017 at 20:57:46
I agree it is most likely the power supply. If you look in BIOS or run HWMonitor or similar program you can look at the primary voltages (12V, 5V, 3.3V) and all of them must remain within 5% +/- from their nominal values. If you get values or fluctuations greater than the 5% or regular or rapid varying of any of the voltages, shut it down and unplug it and do not run it until you get a new and better power supply. Note that cheap power supplies are known to burn our important and expensive components. It is much cheaper to spend for a good power supply than to replace motherboards, graphics cards, and CPU's.

You have to be a little bit crazy to keep you from going insane.

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