Fail on 7th Run

[Alan]

Good Morning.

I ran the Memtest v. 4.2.2 for ca. 10 hours last night. All of the ten runs that completed had no errors, except the seventh run, which indicated 4 errors. My confidence score indicated 156. I am wondering if the errors on run 7 might have been just a power glitch as it seems odd to me that none of the other runs indicated any errors? I am using 32 GB of DDR3 memory and a 6-core Intel processor. It would be a bear to remove my memory, as I have a massive CPU heat sink over it. I am currently running the latest version of memtest, which I downloaded and burned to a disk this morning. I will look at the results at the end of the day.

[David (PassMark)]

Yes, it might be an intermittent problem.
Once you have finished re-running the test with the latest MemTest86 release post the results.

[Alan]

It ran v. 4.3.6 for 12 & 1/2 hours with no errors while I was at work today. Go figure! I turned up my CPU fan (which had a prior tendency to shut off entirely at low temps because of the gargantuan size of my heat sink) just in case the previous run errors were caused by a heat issue. I might try running version 5.0.0 tonight.

[David (PassMark)]

Sounds like the machine is OK (or very nearly OK).
Are there any other signs that make you suspect the RAM might be bad. e.g. BSOD

[Alan]

No BSOD--actually the machine, in general, has been the most stable computer I have owned. I leave it on all the time. I did have to repair Outlook about four days after I did the latest Windows 8.1 update last week--which was the reason I ran Memtest again--but that could have been MS's fault.

[Alan]

I did another 10 & 1/2 hours of testing overnight with ver. 5.0.0 and no errors; I think my memory is o.k.