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PC Shuts off randomly while gaming/under load

post #1 of 17
Thread Starter 
The title says it all. Basically if I am playing a game like the witcher 3 or battlefield 1, my pc just randomly shuts off (not windows shutdown) and then turns back on. Its like a power cutoff type of shutdown. It happens randomly. Sometimes it can happen in a few minutes, other times it can take an hour or more. The PC is fine all day when doing simple tasks such as web browsing, youtube, etc...

Here are my specs:
i7 4790k @stock speeds (No OC)
2 x GTX 980's @stock speeds (No OC)
16GB corsair vengeance ram @2400MHz (XMP profile)
MSI Z97 Gaming 7 motherboard
Corsair RM750 PSU

My PC is custom watercooled, so I have no reason to believe that temps are causing this issue.

Temps while playing The Witcher 3 @1440p ultra settings:

CPU: ~50-52 Celsius
GPU1: ~49-51 Celsius
GPU2: ~47-49 Celsius

I have had this PC for 2 years and 6 months now. I am running into this issue just now. Please let me know if you need any more information on the system.
post #2 of 17
The old RM is not very good anyway so replace it.
Seravee
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CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
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Samsung 840 Evo WD Green WD40EZRX  WD Green WD60EZRX  WD Red WD80EFZX 8TB  
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LG CH12NS30 5x Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
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Asus PG279Q Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt Phanteks Enthoo Luxe 
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Seravee
(23 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD40EZRX  WD Green WD60EZRX  WD Red WD80EFZX 8TB  
Optical DriveCoolingCoolingOS
LG CH12NS30 5x Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorKeyboardPowerCase
Asus PG279Q Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt Phanteks Enthoo Luxe 
MouseMouse PadAudioAudio
Roccat Kone XTD Laser Roccat Sense Metor Sennheiser HD 598 Onkyo TX NR646  
AudioOtherOther
Harman Kardon HKTS 60 CableMod E series PSU cable set CableMod LED Strips 
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post #3 of 17
Thread Starter 
Quote:
Originally Posted by shilka View Post

The old RM is not very good anyway so replace it.

Yeah, some guy on tomshardware also told me that some people were experiencing thermal issues with the RM series power supplies.

Would this be a good replacement?
post #4 of 17
Quote:
Originally Posted by ali13245 View Post

Would this be a good replacement?
Yes
Seravee
(23 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD40EZRX  WD Green WD60EZRX  WD Red WD80EFZX 8TB  
Optical DriveCoolingCoolingOS
LG CH12NS30 5x Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorKeyboardPowerCase
Asus PG279Q Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt Phanteks Enthoo Luxe 
MouseMouse PadAudioAudio
Roccat Kone XTD Laser Roccat Sense Metor Sennheiser HD 598 Onkyo TX NR646  
AudioOtherOther
Harman Kardon HKTS 60 CableMod E series PSU cable set CableMod LED Strips 
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Reply
Seravee
(23 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD40EZRX  WD Green WD60EZRX  WD Red WD80EFZX 8TB  
Optical DriveCoolingCoolingOS
LG CH12NS30 5x Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorKeyboardPowerCase
Asus PG279Q Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt Phanteks Enthoo Luxe 
MouseMouse PadAudioAudio
Roccat Kone XTD Laser Roccat Sense Metor Sennheiser HD 598 Onkyo TX NR646  
AudioOtherOther
Harman Kardon HKTS 60 CableMod E series PSU cable set CableMod LED Strips 
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Reply
post #5 of 17
That P2 is great, if perhaps a little overkill. Buy with confidence.

The problem is indeed probably your current not-so-great PSU.

Looks like you get an easy fix. If not, we'll still be here wink.gif
Arcane
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Tempest
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Fukurou
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WD Caviar 160GB Vista Home Premium 64bit Ubuntu Samsung 226BW 
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Arcane
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Tempest
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Fukurou
(18 items)
 
CPUMotherboardGraphicsGraphics
Core i7 980x GIGABYTE GA-EX58-UD5 MSI RX 480 GAMING X 4GB MSI GeForce GTX 680 Lightning 
RAMHard DriveHard DriveHard Drive
Kingston HyperX T1 Intel X25-M WD Caviar Black FASS Plextor M5S 
Hard DriveHard DriveOptical DriveOptical Drive
WD Velociraptor WD Caviar Black FALS Sony DVD Burner w/ Lightscribe LG Bluray + HDDVD 
CoolingCoolingCoolingOS
Black Ice GTX 360 Black Ice GTX 240 Panaflo High Speed - Push-Pull w/ shrouds Windows 7 Pro (64) 
OSMonitorMonitorKeyboard
Ubuntu (64) X-Star DP2710 ASUS VK266H Black 25.5" 2ms LCD X-Armor U9BL (Mech) 
PowerCaseMouseMouse Pad
EVGA 1000 P2 Cooler Master HAF 932 Razer Deathadder Chroma Cougar Control 
AudioAudioAudioAudio
ATH-A900X Maudio AV-40 Polk PSW-10 Zalman Mic-1 (Clip-on Mic) 
AudioOtherOtherOther
Sound Blaster X7 LE Logitech G13 Wacom Intuos 3 Scythe "3-Foot Switch" 
Other
Modded PS4, PS3, Xbox 360, and Logitech PC Cont... 
CPUGraphicsRAMHard Drive
Core 2 Duo 2.4GHz Conroe Core GTX 280 (Temporarily Removed) 4GB Corsair XMS2 150GB Raptor X 
Hard DriveOSOSMonitor
WD Caviar 160GB Vista Home Premium 64bit Ubuntu Samsung 226BW 
KeyboardPowerCaseMouse
Saitek Cyborg Zalman 1000 watt Apevia X-Discovery Razer Deathadder 
Mouse PadAudio
Razer Mantis Control Creative X-Fi Xtreme Music 
CPUMotherboardRAMHard Drive
Core i5-661 GA-H55-USB3 12GB DDR3 1333 WD Caviar Black AALS 640GB 
Hard DriveHard DriveOptical DriveCooling
WD Caviar Green EARS 2TB Vertex Turbo 60GB (SSD) Samsung Blu-ray, Samsung DVD Burner H50 (With push/pull nocturas) 
OSMonitorKeyboardPower
Windows 7 Professional 64 LG 47in LED LCD Saitek Eclipse Lite-touch Wireless Seasonic X750 Gold 
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CM690 II Passive bookshelfspeakers + amp. Dual TV-Tuner card Comcast decoder card. 
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Fios decoder card. 
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post #6 of 17
Thread Starter 
Quote:
Originally Posted by Zero4549 View Post

That P2 is great, if perhaps a little overkill. Buy with confidence.

The problem is indeed probably your current not-so-great PSU.

Looks like you get an easy fix. If not, we'll still be here wink.gif

Yeah but seeing as its only $135 thats not a bad price compared to its competitor's, and it has really good reviews. I also hope that its just a power supply issue. Still waiting on corsair customer support to see what they can do. If they end up replacing it, I can at least test it and see if the problem was truly from the power supply.
post #7 of 17
Thread Starter 
Quote:
Originally Posted by shilka View Post

Yes

Thanks biggrin.gif
post #8 of 17
Thread Starter 
Just an update, so corsair approved my RMA, and they said they are going to be replacing my current RM750 with the newer updated RM750x model which has a 9.8 on jonnyguru.com So I guess I will test it and if all is good, then hopefully I won't need to fork out $ on a new power supply.
post #9 of 17
Well that's a bonus. Always thumb.gif for saving $135
post #10 of 17
Thread Starter 
Quote:
Originally Posted by maltamonk View Post

Well that's a bonus. Always thumb.gif for saving $135

Yeah definitely man tongue.gif I was not looking forward to buying a new power supply
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