750 U.2 causing CPU issues

[idata]

Hi

I have question if it is possible that Intel 750 SSD connected via U.2 to CPU can cause stability issues eventually destroying the CPU, because I am afraid my disk is just causing this and already damaged one i7700.

Here is my story:

Originally I had this SSD as system drive in Asus Maximus VIII Gene with i7-6700K. It was perfectly stable until I added PCIe graphics card - then I started to experience random deadlocks. I tried to solve this problem by changing voltages and various settings in bios, but with no success. I gave up and bought Asrock Z170 Extreme7+ and because this mobo comes with 3 M.2 slots I bought also two new NVMe Samsung drives for raid and I connected the Intel 750 to the 3rd slot, via PCIe hub, so no direct connection to the CPU. The system was perfectly stable. Few months ago I bought Asus Maximus VIII Impact and i7-7700K for another PC and decided to use Intel 750 as system drive and I got again random deadlocks, this time even without PCIe graphics card. Sometimes the PC ran several days without issues then deadlocked, sometimes it deadlocked within few hours. One day morning I found it deadlocked again, but this time it refused to boot. The boot process ended with post code 40, which is according Asus manual some APIC code "CPU is waking from sleep". I replaced the CPU with spare one and the PC booted. I tried the original CPU in another Asus mobo and the boot process stopped again with post code 40. It was clear that the CPU is dead. I left the system running with the spare CPU, which is some Pentium, and it restarted after two days. No windows error, no blue screens, just restart. This repeated several times, then I decided to reinstall the system, because I thought it may be defective due to bad original CPU, but it did not help. I was really desperate but then I removed the Intel 750 and installed system on SATA Intel SSD. The system is now perfectly stable and has been running stress tests for more than one week.

Regards

Marwyn

[idata]

Hello Marwyn,

It is very unlikely that the SSD is causing CPU issue, we have never seen such behavior at all.One recommendation we can provide you is to always keep your BIOS up to date and to have the latest https://downloadcenter.intel.com/download/26451/Intel-SSD-Data-Center-Family-for-NVMe-Drivers NVMe* driver installed.-What is the operating system you have installed?-We do not suggest changing the voltages on the systemAlso, could you please install the SSD 750 and run this https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility-for-Windows-?product=91... utility (If using Windows*)? Or https://downloadcenter.intel.com/download/26735/Intel-System-Support-Utility-for-the-Linux-Operating... this one if you use Linux.If you use Windows*, please send us the SMART details from the https://downloadcenter.intel.com/download/26574/Intel-Solid-State-Drive-Toolbox Intel® Solid-State Drive Toolbox, using the export button.When attaching the files, please make sure to use the advanced button to attach files.Regards,Nestor C

[idata]

Hello

Operating system is Windows 10, starting with 1511, then 1607, now 1703. I experienced this issue in all versions with both default MS NVMe driver and the driver you provide. I attached the drive again to extract requested info, but I don't think this will help. Attached is also Windows system log from last restart so you can see it is pretty hard. The OS never had a chance to detect any errors. Now after more than 10 days of perfectly stable system without this drive, I am 100% confident the SSD or the cable causes the issue. I think this is much more low level problem, something like voltage spikes on PCIe lines. I don't know if you collect and test returned CPUs but in case you do then the serial number of i7-7700K destroyed by this SSD is M6TS237400593. I did RMA it 14 days ago.

Regards

Marwyn

[idata]

Hi Marwyn,

Thanks for sharing the files requested. We'll review all this situation and we'll keep you updated. As soon as we have news of this we'll let you know.Regards,Nestor C

[idata]

Hello Marwyn,

Based on the research performed we did not find anything unusual in the logs; however, we have some recommendations for you:-Have you contacted https://www.asus.com/us/support/callus Asus* for support?-Have you contacted our http://www.intel.com/content/www/us/en/support/contact-support.html# @2 processor's team?Here are some important links with information about this situation:-http://www.pcworld.com/article/3021023/hardware/how-to-test-your-pc-for-the-skylake-bug.html PC world link-http://www.tomshardware.com/answers/id-3345821/7700k-work-rog-maximus-viii-hero-mobo.html Tom's Hardware linkBasically, we do not know or have seen a relation between the SSD and CPU failures, this could be related to the Asus* motherboard, so you may want to contact them as well our processor's team.Note: These links are being offered for your convenience and should not be viewed as an endorsement by Intel of the content, products, or services offered there.Regards,Nestor C