3930k + ASRock X79 Extreme4 sudden shutdown

Toggle sidebar Toggle sidebar
Silver_Seagull

Silver_Seagull

Reputable
Apr 30, 2014
4
0
4,510
Hey guys,

I recently moved my computer and put the components into a new case. This is not my first build, or case move, but it is my first time having something go completely sideways.

My computer will start up, it will enter Windows 8, or UEFI or memtest or any which thing... until I comes time to use more than 1 core. As soon as the computer uses more than 1 core, it shuts off. No warning, no beeps, nothing. Just bam, off- like someone pulled the power cord. After 5 seconds, it reboots.

I'm on an i7-3930k with an ASRock X79 Extreme4 with the latest BIOS and Win8.1. I've been running this build for a while, and I know it's not PSU, SSD, HDD or GPU related.

I've also booted into a memtest, and run the entire test on single core without failure. When I repeated the test using multiple cores, the computer pulled the shutdown trick. I can idle on the BIOS menus, or in Windows Startup Repair... until I ask for something strenuous and multiple cores kick in. I've tried re-seating the CPU and RAM, pulling the motherboard and checking for shorts, contamination, etc on either side... how can I tell which is bad (to replace it) or how can I fix this?

Thanks!
 
Sort by date Sort by votes
Silver_Seagull

Silver_Seagull

Reputable
Apr 30, 2014
4
0
4,510


My only other thought was a PSU issue, but I've not really seen a PSU shut off and then reboot a PC... is it possible it's the PSU?
 
Upvote 0 Downvote
Z

Zooshooter

Honorable
Feb 8, 2013
339
0
10,960
If it was a PSU issue you'd see problems when something bigger like a graphics card start's to ramp up (usually). It COULD be the PSU, but the draw from an extra core on your cpu firing up isn't really that much that it should be causing an issue. If your PSU is that close to failure that a single core firing up causes the system to crash then the system likely wouldn't even be able to power on in the first place.
 
Upvote 0 Downvote
Silver_Seagull

Silver_Seagull

Reputable
Apr 30, 2014
4
0
4,510
Hi all, I've been over a few options with friends and other hardware.

I dropped an IB-E 2011 processor into the board and the computer still managed to POST, boot, login, open Chrome....and suddenly lose power. So much for the blown core idea!

Next up we tried seeing if it was power usage above a certain threshold, thinking a bum PSU. We put the 3930k back in the board and loaded up some games using 1 or 2 GPUs in the system. The system consistently powered off as soon as 3D geometry appeared on-screen. We tried dual and single-card configs to ensure it wasn't a bum card. Pulling the PSU and stressing it with Furmark on another system (super-old though) with the same single-GPU resulted in.... no shut-down.

Replacing the cards and PSU into the original case, we fired up Furmark at insane settings with the cards in SLI to confirm it was a wobbly PSU...and the system stayed up! We tried Furmark with the CPU torture test (6 cores, 12 threads) while running the insane Furmark GPU test ... and finally the system shut off.

I'm leaning towards PSU, but I'm letting a local guy I trust take a look at it before I drop $200+ on a new 1000W+ PSU.

Thank you all for the ideas and help, but it seems to just be possessed and finicky!
 
Upvote 0 Downvote
Silver_Seagull

Silver_Seagull

Reputable
Apr 30, 2014
4
0
4,510
Hi everyone, I appreciate the responses!

Turns out my PSU was just trashed from high use at higher-than-usual efficiency. Korea (where I was using this PSU) is 220v while Canada is 110v ... so when I came home to the lower voltage, my efficiency went into the basement and thus the shutdowns.
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom