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Computer randomly shuts down (kernel-power error) and restarts constantly after installing new GFX card and PSU

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Last response: in Graphics & Displays
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February 3, 2014 7:58:31 AM

Hey!

First post here, so I'm not sure if this is the right category to post in since the source of my problem remains unknown, so I apologize in advance if it isn't.

Last week I got my brand new EVGA GeForce GTX 780 Ti and Corsair AX760 PSU and installed them. I then proceeded to install Windows 8 over my previous Windows 7 (home) installation. I was about to install the drivers to my new graphics card, when the computer suddenly shut down, as if I had pulled the power cord, and then restart itself. This kept happening, and most of the time I would not even make it to the login screen or the desktop.

I should probably also mention that I bought a Samsung SSD 840 EVO 250gb KW earlier and transferred my OS to it. I never really used it because my old graphics card died, hence why I bought a new one.

I checked the event log, and found a bunch of Kernel-Power errors (code 41) which only tells me that power was unexpectedly lost. If valid, I also received a "System Files Integrity Check & Repair, Code 0x490" error while starting up Windows 7 in fail-safe mode. This was solved changing the boot priority in my BIOS (HDD to my SSD).

My specs are:
OS: Windows 8, 64-bit
GFX: EVGA GeForce GTX 780 Ti (3gb, PhysX, CUDA)
PSU: Corsair AX760 (760W capacity)
MOBO: ASUS Intel socket 1366 Core, P6T (it's old, but I'm pretty sure it is this one)
Processor: Intel Core I7 920 CPU 2.66GHz
RAM: 3x2gb 240 pins DIMM DDR3 RAM (1600MHz)
Disks: Samsung SSD 840 EVO and WesternDigital Raptor 300gb Sata (10000rpm)

After searching for a while, I suspect either the mobo is faulty/too old or the PSU is the problem. The latter seems unlikely since it is a brand new, good PSU with more than enough capacity. However, I could not find someone in the same situation as me and since I'm not a debugging/hardware expert, I thought I'd ask here because I do not know where to begin.

More about : computer randomly shuts kernel power error restarts constantly installing gfx card psu

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February 3, 2014 10:17:11 AM

First try to boot up the PC on safe-mode, see if it stays stable, if it does, then it could be software/driver conflict issue involved rather than hardware issue.

Then try to clean install the OS with a bootable media (DVD/USB), see what happens ! Disconnect the other drive (HDD) when installing OS on SSD.
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February 4, 2014 8:13:28 AM

lonewolf7 said:
First try to boot up the PC on safe-mode, see if it stays stable, if it does, then it could be software/driver conflict issue involved rather than hardware issue.

Then try to clean install the OS with a bootable media (DVD/USB), see what happens ! Disconnect the other drive (HDD) when installing OS on SSD.


I booted in safe-mode and let it run for a couple of hours. It did not crash or randomly shutdown.

In regards to the clean install. I forgot to mention that I actually have Windows 8 Pro (student edition) installed. I have the cables to plug my SSD into my laptop and clear it completely, but since I regrettably did not install to a bootable media when I first installed Windows, I have no idea how to clean install now. I suspect I can just download via this link and use my product key to install the Pro edition to a USB.
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February 4, 2014 9:29:41 AM

This page will help will on how to create a bootable media of WIN 8 and WIN 8.1. Just follow the directions.

http://www.eightforums.com/installation-setup/34102-how...

I am not familiar with the link you posted cause I never used that link. Perhaps your posted link will do the same, so you can try that also. Good luck.
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February 8, 2014 3:40:38 AM

lonewolf7 said:
This page will help will on how to create a bootable media of WIN 8 and WIN 8.1. Just follow the directions.

http://www.eightforums.com/installation-setup/34102-how...

I am not familiar with the link you posted cause I never used that link. Perhaps your posted link will do the same, so you can try that also. Good luck.


Hey lonewolf7,

After some slight issues, I managed to clean install Windows 8.1 on my machine, and everything works beautifully.

When I reconnected my HDD, it booted into Windows 7, which was still on it. Apparently, Samsung's tool for migrating data (Samsung Magician) to my new SSD did not move it, but did a copy instead. That might explain why there was a software/driver issue to begin with. I cleaned my HDD and changed the boot order and everything's back to normal :) 

Thanks for your help!
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February 8, 2014 6:52:37 AM

Glad to hear you are up and running, you are welcome. Cheers.
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March 28, 2014 12:53:30 PM

I have a solution that seems to have worked for me. I have been getting multiple code 41 kernel-power reboots with memdump and BSOD. After several days playing with this, I double checked the Mushkin memory I have. There are 2 pc3-1266 blackline memories. I have the higher 1.6V. After checking the bios I manually changed the voltage of the DRAM to 1.6 from the "auto" 1.4 and the problem has resolved. I have run OCCT and no power issues reported.

Hope this helps someone who may be having this issue for a similar reason.
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