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I have occasional BSOD that concerned me due to increading frequency. Once in two years, then 4 months, then 2 weeks.

I ran Memtest86+ and it locked up after 6 minutes 20 seconds. It repeatedly locks up in the same place (not universally; outlier was earlier). I tried different botherboard settings including Safe Defaults. Having reproduced the issue with a baseline setting, I tried reversing the two banks, each bank installed alone, and always got the same address, in the 4 to 6 MB range if I remember correctly. It follows the address, not the physical RAM module.

I tried one bank only populating the second, with no difference.

Memtest86+ does work OK in F1 Failsafe mode, it seems (longer test run happening now). Note that turning off a couple cores did not make a difference, but I'm not sure if the indicators mean that just one or many cores were engaged; the display might not ahow the hit that caused the freeze, anyway.

Any idea what might be causing this? And more important, how might I mitigate it until I get new hardware set up?

Can I get Windows to block out that range and not use it? (edit: yes! See https://superuser.com/a/490522/368845 )

Hmm, would PCI cards be doing something in that range, or does memtest86+ only count normal RAM?

The CPU (with integrated memory controller) in the AMD 1100T.

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  • Memory controller can use memory in an interlaced mode, so the address is not that relevant. Normally you test memory modules one at a time to catch the bad one – Dan Mar 03 '15 at 08:58
  • I think I was able to turn off interlacing. I don't know if this MB can take just 1 module. Interlaced means the 2MB range is spread across all the modules? I see that would explain it. – JDługosz Mar 03 '15 at 09:23
  • I think they use the "memory interleave" term, if it's a server board you may find some settings in bios. If it's a single cpu desktop board it should run with only one memory module – Dan Mar 03 '15 at 09:44
  • Could be your CPU's memory controller. – bwDraco Mar 03 '15 at 17:41

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