Random Shutdown From off - More inside

[NoSnow3]

The question is placed at the beginning to know what i'm asking before i ramble on

 

The Question:

 

What could be causing the boot from "cold" issue, Running the optimised defaults seems to be ok without any issues but setting the OcUK profile to be on seems to be the issue even though the only real differences are running at 4.5ghz and setting the memory too run at its "Stock" speed.

 

 

Hey guys/girl.

 

Helping out a friend here who isnt as tech savy. (Hope you're in for the long read)

 

Overview:

He purchased a bundle from OCuk in May of last year with the following components.

 

CPU: i7 4790k

Mobo: Gigabyte Z97X-SOC with OCuk profile saved at 4.5ghz OC

Mem: Team Group VULCAN 32Gb in 4 * 8Gb Running at 2133mhz

GPU: 2 X R9 270x's

 

Some of his existing components were an OCZ 750w PSU, 850 evo SSD and a few drives for video creation

 

Problem:

 

When "Cold" booting, Cold being a completley shutdown state, (could of been on 1 minutes before, could of been on 24 hours ago) the system will boot and apply his OCuk profile and run perfectly for more then 5-6 minutes but usually shut off no more then 10 minutes after the first boot (Idle or otherwise underload).

 

After the first "Cold" boot and crash the BIOS will tell him it is loading optimised defaults profile and will start into windows and run perfectly for an infinate amount of time, at one stage the system stayed powered for 3 weeks with no incidents.

 

But the moment he shuts down and does a "cold" start it will wait ten minutes then move back onto its optimised defaults option.

 

What we've done so far:

 

In an unrelated matter he was using his OS on an OCZ SSD, This was failing and was giving him other issues and crashes of applications, Sorted now as moved his OS onto the 850 evo.

Suspect was the SSD to the problems but after the OCZ died during it being cloned, very little could be used of the OS and thus a fresh W7 install was done, the issue continued but is now using W10

 

During Optimised Defaults profile we stress tested CPU, Memory, GPU's together using Aida64, No noticeable issues with tempurature's.

 

During OCuk profile we stress tested CPU, Memory, GPU's together using Aida64, No noticeable issues with tempurature's, however the shutdown occured during Stress testing.

 

Something too note though is i've seen Aida64 Reporting his DIMM voltage as 1.664V (either profile) (1.512V on BIOS). The 12V rail can range from 12.024V on one boot too 12.240V on the next boot. Vcore reports back with 1.260V (OCuk) and 1.248V (Default optimised) on aida64.

 

Last thing i've noticed is Memory frequency is set too 2133mhz in the OcUK profile but Optimised defaults is set as 1333.57mhz, Can't see memory frequency being an issue but i could be wrong.

 

OcUK profile is setup for 4.5ghz Max Turbo and optimised defaults will run at 4.3ghz Max Turbo

 

The Question:

 

What could be causing the boot from "cold" issue, Running the optimised defaults seems to be ok without any issues but setting the OcUK profile to be on seems to be the issue even though the only real differences are running at 4.5ghz and setting the memory too run at its "Stock" speed.

 

Thank you for reading this and any replies would be some help.

 

NoSnow3