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Thank you - will give it a try.

Update: I've spent the last week in r&d and have had some success which may help others with a similar setup. I made the following changes and have managed to keep the system stable for 24 hours and have successfully imported 64,000 photos into a new Lightroom catalog with all cpu's running...

Update 2: So it turned out that the system was not stable for much longer than an hour. I made the following changes and have managed to keep the system stable for 24 hours and have successfully imported 64,000 photos into a new Lightroom catalog with all cpu's running: Reduced RAM frequency...

Update: I was not able to get a stable CPU with any voltage under 1.415. I have been running at that voltage for an hour or so and ran geekbench which is usually enough to crash the system and its still up. Temps were bouncing of 99C during the tests though. Running at 38.3C now during a large...

This is really interesting - I have been having the random restarting for ages now and I tracked it down to tasks that require the processor to multi-thread. My less-than-ideal fix to date has been to use the "cpus=1" boot flag. This completely eliminated random restarts during Photos...

Thanks Bob - sadly I think you're right. its been a case of "chase the gremlin" since I built this one. I will keep everyone posted on my progress.

Update - I added the boot flag cpus=1 and this has eliminated the restarting issue (while unfortunately limiting the usefulness). Has anyone figured out how to solve this before?

Not sure if this is helpful but I have attached a screenshot of my Diagnostic Reports folder - the one that seemed most odd was the "wakeups" which reported "45022 wakeups over the last 298 seconds (151 wakeups per second average), exceeding limit of 150 wakeups per second over 300"

Hi - I installed 8GB of fresh RAM (from the compatibility list @ Gigabyte) and ran MemTest86 - no errors. Booted into Sierra but found the same problem. When I stress the CPU by running GeekBench4 or converting a video file it reboots.

Will do - thank you.

Thanks - I'll keep trying to get it working and report any success.

Not sure whether this is relevant but under Yosemite and Sierra I have always had a hard time successfully running handbrake to convert video files - it would always crash after a while. I was able to solve the issue by adding a "threads=1" into the advanced options. Since my crashes now seem...

Hi Thank you for the reply. Yes the USB wire is installed per the diagram on both the card and the USB header.

Wow I wish I had read this thread before I bought the package from OSXWIFI (PC/HACKINTOSH - APPLE BROADCOM BCM94360CD - 802.11 A/B/G/N/AC + BLUETOOTH 4.0). Like others here I followed the instructions but in my case it caused a KP before the machine could even boot. Sent OSXWIFI 2 emails and 2...

Hi Thank you for the help. I have attached the results from the MemTest86.

Hi - so I reinstalled Sierra but now am unable to boot into the memtest86 - I select it in the bios but then it goes to clover boot screen. Selecting it in clove boot screen results in the "no bootable media" error. Any help would be appreciated - apologies for the ignorance!

Hi - My system crashed during the MemTest86 process and I am unable to recover it. No important data there though so will reinstall Sierra and try again. Thanks

Hello, I know this a really old thread but I am having the sam issues that SilentBlackPanther is reporting and my system configuration is similar: Mobo: GA-Z97X-SOC CPU: Intel Core BX80646I74790K i7-4790K Processor (8M Cache, up to 4.40 GHz) Graphics: EVGA GTX 760 Running OS X 10.12.3 from...

Hello All, Thank you for your continued help with this issue.While I haven't solved it 100%, I have found a workaround which has lead me to a hypothesis. The main issue for me was a total shut down when I tried to run Handbrake to convert a large video file (small ones were ok). I found...

I noticed in your log files that you had the following: 15.12.15 01:10:51,000 kernel[0] process CINEBENCH OSX[441] caught causing excessive wakeups. Observed wakeups rate (per sec): 2167; Maximum permitted wakeups rate (per sec): 150; Observation period: 300 seconds; Task lifetime number of...