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PC Shuts down whilst gaming or under heavy tasks.. HELP!

492 views 21 replies 10 participants last post by  philhalo66 
#1 ·
Hi Guys,

I have a problem where my PC just shuts down when it's been under some load IE gaming or heavy tasks it would just turn off and won't switch back on unless I switch off the power or unplug the power lead for about 5 - 10 minutes or so.

I have replaced the motherboard with a gaming board running default settings, re done the CPU thermal paste, checked temperatures and they are all absolutely fine. I have sorted out the cables to make sure nothing is shorting and even tried running with the CD defies unplugged but still having the same issue!!

Does anyone know why this is happening ?

Is my PSU smaller than what I need? (I did try replacing the PSU with the exact same one but still had the same issue)

Specs:
AMD 9590 FX CPU @ 4.7 Ghz
16GB of Ballistix Sports Ram
850 Watt Corsair Power supply (modular) (CX850M)
Gigabyte Gaming 990fx motherboard
Gigabyte Superclocked GTX 770 Graphics Card
120GB SSD
2 x 1TB Seagate Hard drives

Please help me ! I'm running out of solutions

Please note i have tried the following to resolve the issue:

Replaced the motherboard
Replaced PSU (Only with another CX850M, i was considering of upgrading and trying the RM1000 Modular 1000 Watt Power Supply as i have heard that lack of power can also cause this issue)
Reset the BIOS settings to factory defaults
Tidied all the wiring to make sure that nothing is shorting
Reseated the RAM
Tested the RAM using Memtest 86+ 5.01
Replaced the power lead going to the power supply
Tried with hooking up a surge protector

I'm running out of ideas.. my last 2 i can think of is testing with the 1000 Watt power supply or possibly replacing the card?
 
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#2 ·
PSU specifies more current than needed for that system and Jonny Guru says the PSU's quality is decent enough: http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=427

So, assuming there isn't another version of this PSU that was dramatically reduced in quality and that you don't have a defective sample, the next most likely culprits are the motherboard or cooling.

The FX-9590 is an unholy monstrosity when it comes to current draw, so I'd check to make sure the board's VRM is not overheating and that you have loosened up any current limiters in your board's BIOS settings. I'm not terribly familiar with that 990FX gaming, but I haven't heard any horror stories about it yet, and it looks like the VRM is robust enough to handle a stock FX-9590, so with the right settings it should.

What sort of cooling are you using? Again this part is a monster and insufficient cooling can certainly cause issues.
 
#4 ·
Quote:
Originally Posted by Blameless View Post

PSU specifies more current than needed for that system and Jonny Guru says the PSU's quality is decent enough: http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=427

So, assuming there isn't another version of this PSU that was dramatically reduced in quality and that you don't have a defective sample, the next most likely culprits are the motherboard or cooling.

The FX-9590 is an unholy monstrosity when it comes to current draw, so I'd check to make sure the board's VRM is not overheating and that you have loosened up any current limiters in your board's BIOS settings. I'm not terribly familiar with that 990FX gaming, but I haven't heard any horror stories about it yet, and it looks like the VRM is robust enough to handle a stock FX-9590, so with the right settings it should.

What sort of cooling are you using? Again this part is a monster and insufficient cooling can certainly cause issues.
I'm using a corsair h100i and would you help me with the settings as I'm a newbie when it comes to voltages etc
 
#6 ·
Quote:
Originally Posted by Ziglez View Post

You would get away with a 650 watt power supply with your build.The fact you ran a memtest as memtest kind of stresses the computer and nothing happened, it might be windows. You could try booting into safe mode and seeing what happens.
I have re-installed windows and still the same problem
 
#9 ·
Quote:
Originally Posted by sepiashimmer View Post

Maybe both of the PSUs were faulty?
This is what i am wondering.. what i will do, i will go get this 1000 Watt power supply, and see if that solves the problem. The fact that i have read up that the CX series are not very reliable is what makes me think its that specific power supply.

I will update and let you guys know how it gets on!
smile.gif
 
#10 ·
Quote:
Originally Posted by sepiashimmer View Post

Maybe both of the PSUs were faulty?
This is what i am wondering.. what i will do, i will go get this 1000 Watt power supply, and see if that solves the problem. The fact that i have read up that the CX series are not very reliable is what makes me think its that specific power supply.

I will update and let you guys know how it gets on!
smile.gif
 
#11 ·
Are you using ANY extension cables or adapters in your PC? Even a fan hub or similar...if so, remove it all. In fact, any chance of unhooking everything but 1 stick of RAM and the CPU, and PSU of course. Boot into a LiveCD or LiveUSB environment, and see if you are still experiencing the issue. That will eliminate a bunch of stuff all in one go...specifically eliminate software / driver issues.
 
#22 ·
HMM glad to see you fixed it. For future reference when your PSU wont s witch back on till you unplug it it means something tripped the OPP (Over Power Protection ie drawing too many watts) or OCP (Over Current Protection. ie drawing too much current)
 
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