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Cache Hierarchy Error i7 4790k

redvfr750

redvfr750

redvfr750

Associate
Joined
11 Nov 2015
Posts
6
Hi,

This is my first post on this site so Hi! I hope someone can help as I'm officially lost!

I have been getting a Cache Hierarchy Error WHEA fault that is causing random BSOD. My spec on my self build rig is as follows:

MSI Gaming 5 MOBO
i7 4790k CPU
EVGA Supernova 850 G2 Power unit (upgraded from Corsair CX 750)
16 GB Corsair Vengeance PRO DDR3 RAM (also new set of 16GB Vengeance DDR bought as replacement while diagnosing problem)
Palit GTX 970 GPU
Seagate 4TB HHDD
128GB Sandisk SHH
Windows 7

This system has been stable for a year but a few months ago it had its first BSOD. I then started to investigate and found that every minute it would log a corrected hardware fault in the event viewer, as well as around 8 on start-up (same time stamp). There are no other significant errors so I'm assuming the BSOD is due to this.

The fixes I have tried so far are a new power supply, new RAM, latest BIOS, unplugged GPU, checked all drivers and Windows updates, removed Anti Virus and switched off all power saving features in the BIOS (I think I've tried them all but I wouldn't be 100% I didn't miss one.)

The only solution I have found is to run the CPU on 1 core, set from the BIOS. this eliminates the fault completely.

The only components I haven't changed are the MOBO and CPU. I ran a bare system in safe mode and still get the error but not as many BSOD.

I have been all over Google trying to find a solution but the info on this type of fault is sparse. Other people seem to have had similar issues but just about every thread I've read ends with no solution.

Any help or suggestions would be much appreciated.
 
I originally thought PSU so I changed out the CX 750 unit for a EVGA 850G2 but same fault. Not sure if I can down clock this chip, I'll give it a try. All my voltages are being controlled by the BIOS, I have set everything to default and turned off turbo boost and all power saving functions. No effect. I had read a site that suggested it could be the V. Core or memory controller voltage but there was no other info so I couldn't go any further with it.

Thanks.
 
Hi Jono8,

I just tried a downclock to 3.5 then 2 Ghz with the same error. All other settings were set to default and all 4 cores were active. Still at a loss other than changing the MOBO and CPU!

Cheers
 
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