i7 7700k BSOD issue.

robnof

Honorable
Oct 9, 2012
491
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10,960
I7 7700k @ 5GHz
Asus Z270 Maximus IX Hero
Corsair H100i closed loop cooler
Gskill TridentZ RGB 16g @ 3000MHz
Gigabyte Aorus GTX 1080 Ti
Corsair HX 1000I PSU 1000w
240GB NVMe boot drive
1TB SSD
2TB HDD


I've been running my new Kaby Lake build since May month@ 5 GHz, voltage 1.37. My system was stable after using AIDA64 overnight, with temps in the low 80s at first, then after ramping up my fan RPM, my temps became much more favorable. I was using these system settings until recently without any issues.

Last week my system started to behave strangely, with system lockups, random crashes. I disabled my overclock, at which point I could no longer enter Windows without getting BSOD errors of varying codes. I tried to use installation media to restore Windows, but that too would result in BSOD.

I restored my mobo to its optimized default settings, updated my motherboard bios, issues persisted. Swapped out ram, cooler, psu, etc. No fix. Finally I did a CPU swap with my girlfriend's pc, the CPU being an i5 7600k, and everything returned to normal. Just to verify that it was my i7 being problematic, I tried it out on her system. As predicted, it caused the same type of issues.

In any case, my CPU is being replaced. I'm just curious as to what happened. I'm not new to overclocking, and I've worked on dozens of systems the past decade. I've never experienced any issues like this.

Any thoughts on what caused my issue are appreciated,
 
Solution
perhaps you have gone past the voltage limit, or there was a weakness in that chip that reduced it's voltage limit. It's why I always suggest OCing early if you are going to do it, don't wait for the warranty to expire.
Not every 7700K will hit and maintain 5 GHz with complete stability...

On the positive side, it is faster in gaming than most processors on the planet at 'only' 4.9 GHz...

Although your results seem to imply that it would not even run at stock clocks afterward? Maybe an OC-related early fatality?
 

robnof

Honorable
Oct 9, 2012
491
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10,960
True, but typically the system crashes start moments or hours into stress testing. Not three months later, after passing the initial 24 hour stress test.

You could be right. But three months is a short frame of time even for a heavy OC to kill a CPU. I tortured the living crap out of my old 2500k, and its still functional today as the brain of my media server.

@13thmonkey:
I purposely stayed within what I understood to be a safe voltage limit for the 7700k (under 1.4v). But that is irrelevant if my CPU is defective.