PC Hangs up randomly. Issues with multi-threaded testing and Test #7

[xNimrodx]

So... Let me tell you the story so far....

Been a month that my system with a Pure Black 990FX MB was giving me BSOD once every 2 days, then started to do it everyday. Decided I had enough, took the AsRock 990FX Extreme 9 out of the box (finally you could say, since it was idling in that box for months), and do a fresh install-of-all-the-things.
Told myself "that shoud fix it!"
....nope

Before scrapping the old system I went with some testing with MemTest 86+
version 5.1 gave me errors, I mean, LOTS of errors, on the order of 400+ errors, but only on test #7. Multithread wasn't a thing, so it ran always on CPU #0.
Attached are some screenshots that I made with my phone's camera when I stopped the tests during the first tries believing that the ram was the issue. Then I read somewhere that test #7's errors could be related to bandwith issues between the MB and the DIMMS. So I ran more tests just to get more errors, but only on that test, #7
I ran the tests this way: tested every single DIMM alone, then all togheter. Only test #7 gave me issues. Test #10 blocked my system entirely.
Read somewhere that multithread support wasn't a thing on the 5.1 v of the program and that test #7 had some issues too, so I said "don't care, let's just go for the new MB at this point and test things there". So I did.
After installing and updating every bit of windows and drivers, the pc hangs up again.. it does that usually after hours of work without issues. Randomly. And without saying a thing, like, leaving me completely clueless. It just freezes and that's it.
So, more tests.
Downloaded the 7.1v of MemTest 86+, and starting to run tests.
First issues: the program doesn't like this MB too, because it only runs on CPU #0. Tried to run tests with Parallel, no way; with R.Robin, no way; sequential goes, but it doesn't switch CPU, it stays on #0, so.... pretty much that.
And guess what, test #7. Again. Not so many issues as with the precedent MB and the precedent version of MemTest 86+, but always different addresses, completely random. I've ran multiple passes and multiple tests and every pass of every test had some address fail here and there, random fails.
And test 13#. But only one time. Then nevermore.
All other tests went through without a hiccup.

Thing is: I've run BurnIn on Torture mode for the ram, 10 processes at 10% each, and guess what, the test passed, but the system froze 20 mins later; I've run the CPU on torture mode at 100% for 4 hours and trillions of operations and not a single error. I've run a Torture test with the GPU, the Ram and the CPU at 100%, and nothing.
But it seems to me that if I leave the system alone, after 20 mins it freezes.
I don't know what to think anymore. I thought it could be the PSU, it should crash my system under heavy load but it doesn't.
I thought it could have been my CPU, but after stress testing it for 4 hours and no errors....meh.
Thought it is the 32 GB of RAM, after all the errors with this test 7# in MemTest 86+, but....doesn't look like from BurnIn.

Anyway, since I can't attach logs, here we got with copy-paste.

[xNimrodx]

Test 13 failed, but later on it didn't anymore.

Summary

Report Date	2016-08-11 08:28:56
Generated by	MemTest86 V7.1 Free (64-bit)
Result	FAIL

System Information

EFI Specifications	2.31
CPU Type	AMD FX-8350 Eight-Core
CPU Clock	3991 MHz [Turbo: 4091.3 MHz]
# Logical Processors	8
L1 Cache	8 x 80K (36037 MB/s)
L2 Cache	8 x 2048K (26252 MB/s)
L3 Cache	1 x 8192K (10151 MB/s)
Memory	32776M (4290 MB/s)
DIMM Slot #0	8GB DDR3 XMP PC3-14900
	Corsair / CMZ32GX3M4A1866C9
	9-10-9-27 / 1866 MHz / 1.500V
DIMM Slot #1	8GB DDR3 XMP PC3-14900
	Corsair / CMZ32GX3M4A1866C9
	9-10-9-27 / 1866 MHz / 1.500V
DIMM Slot #2	8GB DDR3 XMP PC3-14900
	Corsair / CMZ32GX3M4A1866C9
	9-10-9-27 / 1866 MHz / 1.500V
DIMM Slot #3	8GB DDR3 XMP PC3-14900
	Corsair / CMZ32GX3M4A1866C9
	9-10-9-27 / 1866 MHz / 1.500V

Result summary

Test Start Time	2016-08-11 04:55:56
Elapsed Time	3:32:52
Memory Range Tested	0x0 - 830000000 (33536MB)
CPU Selection Mode	Single: CPU # 0
# Tests Passed	13/15 (86%)

Lowest Error Address	0x27D8D4CCC (10200MB)
Highest Error Address	0x7C80D2E6C (31872MB)
Bits in Error Mask	00000000B908440F
Bits in Error	12
Max Contiguous Errors	1

Test	# Tests Passed	Errors
Test 0 [Address test, walking ones, 1 CPU]	2/2 (100%)	0
Test 1 [Address test, own address, 1 CPU]	2/2 (100%)	0
Test 2 [Address test, own address]	2/2 (100%)	0
Test 3 [Moving inversions, ones & zeroes]	1/1 (100%)	0
Test 4 [Moving inversions, 8-bit pattern]	1/1 (100%)	0
Test 5 [Moving inversions, random pattern]	1/1 (100%)	0
Test 6 [Block move, 64-byte blocks]	1/1 (100%)	0
Test 7 [Moving inversions, 32-bit pattern]	0/1 (0%)	12
Test 8 [Random number sequence]	1/1 (100%)	0
Test 9 [Modulo 20, ones & zeros]	1/1 (100%)	0
Test 10 [Bit fade test, 2 patterns, 1 CPU]	1/1 (100%)	0
Test 13 [Hammer test]	0/1 (0%)	5

Last 10 Errors

[Data Error] Test: 13, CPU: 0, Address: 784848E68, Expected: 2B67ECFB, Actual: 2367ECFB

[Data Error] Test: 13, CPU: 0, Address: 748848ED0, Expected: 933DCE51, Actual: B33DCE51

[Data Error] Test: 13, CPU: 0, Address: 6C6048994, Expected: 7EAD4345, Actual: 7EA54345

[Data Error] Test: 13, CPU: 0, Address: 550848E00, Expected: BB5A9271, Actual: 3B5A9271

[Data Error] Test: 13, CPU: 0, Address: 3100487EC, Expected: 5A3D5754, Actual: 5A3D5354

[Data Error] Test: 7, CPU: 0, Address: 7C80D2E6C, Expected: F7FFFFFF, Actual: FFFFFFFF

[Data Error] Test: 7, CPU: 0, Address: 737221374, Expected: 00000004, Actual: 00000000

[Data Error] Test: 7, CPU: 0, Address: 5F7A01804, Expected: 00000004, Actual: 00000000

[Data Error] Test: 7, CPU: 0, Address: 56A2DEFCC, Expected: FFFFFFFE, Actual: FFFFFFFF

[Data Error] Test: 7, CPU: 0, Address: 5076DAFA0, Expected: 00000002, Actual: 00000000

[xNimrodx]

Took almost 5 hours to run only this test, while previously it took much less time after - also - running all the rest of the tests.

Summary

Report Date	2016-08-11 18:21:40
Generated by	MemTest86 V7.1 Pro (64-bit)
Result	PASS

System Information

EFI Specifications	2.31
CPU Type	AMD FX-8350 Eight-Core
CPU Clock	4000 MHz [Turbo: 4000.3 MHz]
# Logical Processors	8
L1 Cache	8 x 80K (35314 MB/s)
L2 Cache	8 x 2048K (26235 MB/s)
L3 Cache	1 x 8192K (6736 MB/s)
Memory	32776M (2281 MB/s)
DIMM Slot #0	8GB DDR3 XMP PC3-14900
	Corsair / CMZ32GX3M4A1866C9
	9-10-9-27 / 1866 MHz / 1.500V
DIMM Slot #1	8GB DDR3 XMP PC3-14900
	Corsair / CMZ32GX3M4A1866C9
	9-10-9-27 / 1866 MHz / 1.500V
DIMM Slot #2	8GB DDR3 XMP PC3-14900
	Corsair / CMZ32GX3M4A1866C9
	9-10-9-27 / 1866 MHz / 1.500V
DIMM Slot #3	8GB DDR3 XMP PC3-14900
	Corsair / CMZ32GX3M4A1866C9
	9-10-9-27 / 1866 MHz / 1.500V

Result summary

Test Start Time	2016-08-11 13:36:56
Elapsed Time	4:44:22
Memory Range Tested	0x0 - 830000000 (33536MB)
CPU Selection Mode	Single: CPU # 0
# Tests Passed	1/1 (100%)

Test	# Tests Passed	Errors
Test 13 [Hammer test]	1/1 (100%)	0

[xNimrodx]

Test #7 doesn't like me at all Summary

Report Date	2016-08-11 20:55:23
Generated by	MemTest86 V7.1 Pro (64-bit)
Result	FAIL

System Information

EFI Specifications	2.31
CPU Type	AMD FX-8350 Eight-Core
CPU Clock	4000 MHz [Turbo: 4000.3 MHz]
# Logical Processors	8
L1 Cache	8 x 80K (35314 MB/s)
L2 Cache	8 x 2048K (26235 MB/s)
L3 Cache	1 x 8192K (6736 MB/s)
Memory	32776M (2281 MB/s)
DIMM Slot #0	8GB DDR3 XMP PC3-14900
	Corsair / CMZ32GX3M4A1866C9
	9-10-9-27 / 1866 MHz / 1.500V
DIMM Slot #1	8GB DDR3 XMP PC3-14900
	Corsair / CMZ32GX3M4A1866C9
	9-10-9-27 / 1866 MHz / 1.500V
DIMM Slot #2	8GB DDR3 XMP PC3-14900
	Corsair / CMZ32GX3M4A1866C9
	9-10-9-27 / 1866 MHz / 1.500V
DIMM Slot #3	8GB DDR3 XMP PC3-14900
	Corsair / CMZ32GX3M4A1866C9
	9-10-9-27 / 1866 MHz / 1.500V

Result summary

Test Start Time	2016-08-11 19:21:21
Elapsed Time	0:52:32
Memory Range Tested	0x0 - 830000000 (33536MB)
CPU Selection Mode	Single: CPU # 0
# Tests Passed	0/1 (0%)

Lowest Error Address	0x1DEDB5FA0 (7661MB)
Highest Error Address	0x80F1A1730 (33009MB)
Bits in Error Mask	000000000980D00F
Bits in Error	10
Max Contiguous Errors	1

Test	# Tests Passed	Errors
Test 7 [Moving inversions, 32-bit pattern]	0/1 (0%)	24

Last 10 Errors

[Data Error] Test: 7, CPU: 0, Address: 80F1A1730, Expected: FEFFFFFF, Actual: FFFFFFFF

[Data Error] Test: 7, CPU: 0, Address: 7F05F4CF4, Expected: 00000001, Actual: 00000000

[Data Error] Test: 7, CPU: 0, Address: 7BF1ED78C, Expected: 08000000, Actual: 00000000

[Data Error] Test: 7, CPU: 0, Address: 7601A5C6C, Expected: F7FFFFFF, Actual: FFFFFFFF

[Data Error] Test: 7, CPU: 0, Address: 6CDDF9AB0, Expected: FEFFFFFF, Actual: FFFFFFFF

[Data Error] Test: 7, CPU: 0, Address: 6BD9AF748, Expected: 00800000, Actual: 00000000

[Data Error] Test: 7, CPU: 0, Address: 64F1A1B80, Expected: FEFFFFFF, Actual: FFFFFFFF

[Data Error] Test: 7, CPU: 0, Address: 56F12BD5C, Expected: FFFFBFFF, Actual: FFFFFFFF

[Data Error] Test: 7, CPU: 0, Address: 51F9AD72C, Expected: 00001000, Actual: 00000000

[Data Error] Test: 7, CPU: 0, Address: 4CB1A9ACC, Expected: FFFFBFFF, Actual: FFFFFFFF

[xNimrodx]

BurnInTest results

BurnInTest Version	V8.1 Pro 1018
Date	Fri Aug 12 13:37:41 2016
Logging level	Normal

System summary

System summary

Windows 7 Ultimate Edition Service Pack 1 build 7601 (64-bit),

1 x AMD FX(tm)-8350 Eight-Core Processor [4001.3 MHz],

32.0GB RAM,

AMD Radeon HD 6870,

233GB HDD, 466GB HDD, 2 x 932GB HDD, 279GB HDD,

CD/DVDRW,

General

System Name:	SHADOW
System Model:	To Be Filled By O.E.M.
Motherboard Manufacturer:	ASRock
Motherboard Name:	990FX Extreme9
BIOS Manufacturer:	American Megatrends Inc.
BIOS Version:	P1.80
BIOS Release Date:	03/29/2016
BIOS Serial Number:	To Be Filled By O.E.M.

CPU

CPU manufacturer:	AuthenticAMD
CPU Type:	AMD FX(tm)-8350 Eight-Core Processor
CPUID	Family 15, Model 2, Stepping 0, Revision OR-C2
Physical CPU's:	1
Cores per CPU:	4
Hyperthreading:	Not capable
CPU features:	MMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 SSE4a DEP PAE AMD64 AES Turbo core AVX XOP FMA3 FMA4
Clock frequencies:
- Measured CPU speed:	4001.3 MHz [Turbo core: 4001.5MHz]
- Multiplier:	x20.0 [Turbo core: x20.0]
- Reference Clock:	200.1 MHz
Cache per CPU package:
- L1 Instruction Cache:	8 x 16 KB
- L1 data cache:	8 x 64 KB
- L2 cache:	8 x 2 MB
- L3 cache:	8 MB

Memory

Total Physical Memory:	32737MB
Available Physical Memory:	30369MB
Memory devices:
Slot 1:	8GB DDR3 SDRAM PC3-14933
	Corsair CMZ32GX3M4A1866C9
	XMP: 1.50V, Clk: 933.3MHz, Timings 9-10-9-27
Slot 2:	8GB DDR3 SDRAM PC3-14933
	Corsair CMZ32GX3M4A1866C9
	XMP: 1.50V, Clk: 933.3MHz, Timings 9-10-9-27
Slot 3:	8GB DDR3 SDRAM PC3-14933
	Corsair CMZ32GX3M4A1866C9
	XMP: 1.50V, Clk: 933.3MHz, Timings 9-10-9-27
Slot 4:	8GB DDR3 SDRAM PC3-14933
	Corsair CMZ32GX3M4A1866C9
	XMP: 1.50V, Clk: 933.3MHz, Timings 9-10-9-27
Virtual memory:	C:\pagefile.sys (allocated base size 4096MB)

Memory SPD

DIMM#0
Memory type:	DDR3 SDRAM
SPD revision:	1.1
Manufacturer:	Corsair
Serial number:	00000000
Part number:	CMZ32GX3M4A1866C9
Clock speed:	666.7 MHz
Memory size:	8192 MB
Number of banks:	8
Row address bits:	16
Column address bits:	10
Bus width:	64 bits
Device width:	8 bits
Number of ranks:	2
ECC:	No
Module voltage:	1.5V
Minimum clock cycle time (tCK):	1.500 ns
Supported CAS latencies:	6 7 9
Minimum CAS latency time (tAA):	13.125 ns
Minimum RAS to CAS delay time (tRCD):	13.125 ns
Minimum row precharge time (tRP):	13.125 ns
Minimum active to precharge time (tRAS):	36.000 ns
Supported timing at highest clock speed:	9-9-9-24
Minimum Row Active to Row Active Delay (tRRD):	6.000 ns
Minimum Active to Auto-Refresh Delay (tRC):	48.125 ns
Minimum Recovery Delay (tRFC):	260.000 ns
Minimum Write Recovery time (tWR):	15.000 ns
Minimum Write to Read CMD Delay (tWTR):	7.500 ns
Minimum Read to Pre-charge CMD Delay (tRTP):	7.500 ns
Minimum Four Activate Window Delay (tFAW):	30.000 ns
Operating temperature range:	0-95C
Supports Auto Self-Refresh:	No
Supports Partial Array Self-Refresh:	Yes
Thermal Sensor present:	No
Supports On-Die Thermal Sensor readout:	No
Non-standard SDRAM type:	Standard Monolithic
Module type:	UDIMM
Module Height:	29 - 30 mm
Module Thickness:	Front: 2 - 3 mm, Back: 2 - 3 mm
Module Width:	133.5 mm
Reference raw card used:	Raw Card B Rev. 0
XMP Revision:	1.3
[XMP Profile 1] Module voltage:	1.50V
[XMP Profile 1] Clock speed:	933.3 MHz
[XMP Profile 1] Minimum clock cycle time (tCK):	1.071 ns
[XMP Profile 1] Supported CAS latencies:	6 9
[XMP Profile 1] Minimum CAS latency time (tAA):	9.631 ns
[XMP Profile 1] Minimum RAS to CAS delay time (tRCD):	10.700 ns
[XMP Profile 1] Minimum row precharge time (tRP):	9.631 ns
[XMP Profile 1] Minimum active to precharge time (tRAS):	28.857 ns
[XMP Profile 1] Supported timing at highest clock speed:	9-10-9-27
[XMP Profile 1] Minimum Row Active to Row Active Delay (tRRD):	7.500 ns
[XMP Profile 1] Minimum Active to Auto-Refresh Delay (tRC):	50.626 ns
[XMP Profile 1] Minimum Recovery Delay (tRFC):	260.000 ns
[XMP Profile 1] Minimum Write Recovery time (tWR):	15.000 ns
[XMP Profile 1] Minimum Write to Read CMD Delay (tWTR):	7.500 ns
[XMP Profile 1] Minimum Read to Pre-charge CMD Delay (tRTP):	7.500 ns
[XMP Profile 1] Minimum Four Activate Window Delay (tFAW):	37.500 ns
[XMP Profile 1] Maximum tREFI Time (Average Periodic Refresh Interval):	7.786 us
[XMP Profile 1] Write to Read CMD Turn-around Time Optimizations:	No adjustment
[XMP Profile 1] Read to Write CMD Turn-around Time Optimizations:	No adjustment
[XMP Profile 1] Back 2 Back CMD Turn-around Time Optimizations:	No adjustment
[XMP Profile 1] System CMD Rate Mode:	2N
DIMM#1
Memory type:	DDR3 SDRAM
SPD revision:	1.1
Manufacturer:	Corsair
Serial number:	00000000
Part number:	CMZ32GX3M4A1866C9
Clock speed:	666.7 MHz
Memory size:	8192 MB
Number of banks:	8
Row address bits:	16
Column address bits:	10
Bus width:	64 bits
Device width:	8 bits
Number of ranks:	2
ECC:	No
Module voltage:	1.5V
Minimum clock cycle time (tCK):	1.500 ns
Supported CAS latencies:	6 7 9
Minimum CAS latency time (tAA):	13.125 ns
Minimum RAS to CAS delay time (tRCD):	13.125 ns
Minimum row precharge time (tRP):	13.125 ns
Minimum active to precharge time (tRAS):	36.000 ns
Supported timing at highest clock speed:	9-9-9-24
Minimum Row Active to Row Active Delay (tRRD):	6.000 ns
Minimum Active to Auto-Refresh Delay (tRC):	48.125 ns
Minimum Recovery Delay (tRFC):	260.000 ns
Minimum Write Recovery time (tWR):	15.000 ns
Minimum Write to Read CMD Delay (tWTR):	7.500 ns
Minimum Read to Pre-charge CMD Delay (tRTP):	7.500 ns
Minimum Four Activate Window Delay (tFAW):	30.000 ns
Operating temperature range:	0-95C
Supports Auto Self-Refresh:	No
Supports Partial Array Self-Refresh:	Yes
Thermal Sensor present:	No
Supports On-Die Thermal Sensor readout:	No
Non-standard SDRAM type:	Standard Monolithic
Module type:	UDIMM
Module Height:	29 - 30 mm
Module Thickness:	Front: 2 - 3 mm, Back: 2 - 3 mm
Module Width:	133.5 mm
Reference raw card used:	Raw Card B Rev. 0
XMP Revision:	1.3
[XMP Profile 1] Module voltage:	1.50V
[XMP Profile 1] Clock speed:	933.3 MHz
[XMP Profile 1] Minimum clock cycle time (tCK):	1.071 ns
[XMP Profile 1] Supported CAS latencies:	6 9
[XMP Profile 1] Minimum CAS latency time (tAA):	9.631 ns
[XMP Profile 1] Minimum RAS to CAS delay time (tRCD):	10.700 ns
[XMP Profile 1] Minimum row precharge time (tRP):	9.631 ns
[XMP Profile 1] Minimum active to precharge time (tRAS):	28.857 ns
[XMP Profile 1] Supported timing at highest clock speed:	9-10-9-27
[XMP Profile 1] Minimum Row Active to Row Active Delay (tRRD):	7.500 ns
[XMP Profile 1] Minimum Active to Auto-Refresh Delay (tRC):	50.626 ns
[XMP Profile 1] Minimum Recovery Delay (tRFC):	260.000 ns
[XMP Profile 1] Minimum Write Recovery time (tWR):	15.000 ns
[XMP Profile 1] Minimum Write to Read CMD Delay (tWTR):	7.500 ns
[XMP Profile 1] Minimum Read to Pre-charge CMD Delay (tRTP):	7.500 ns
[XMP Profile 1] Minimum Four Activate Window Delay (tFAW):	37.500 ns
[XMP Profile 1] Maximum tREFI Time (Average Periodic Refresh Interval):	7.786 us
[XMP Profile 1] Write to Read CMD Turn-around Time Optimizations:	No adjustment
[XMP Profile 1] Read to Write CMD Turn-around Time Optimizations:	No adjustment
[XMP Profile 1] Back 2 Back CMD Turn-around Time Optimizations:	No adjustment
[XMP Profile 1] System CMD Rate Mode:	2N
DIMM#2
Memory type:	DDR3 SDRAM
SPD revision:	1.1
Manufacturer:	Corsair
Serial number:	00000000
Part number:	CMZ32GX3M4A1866C9
Clock speed:	666.7 MHz
Memory size:	8192 MB
Number of banks:	8
Row address bits:	16
Column address bits:	10
Bus width:	64 bits
Device width:	8 bits
Number of ranks:	2
ECC:	No
Module voltage:	1.5V
Minimum clock cycle time (tCK):	1.500 ns
Supported CAS latencies:	6 7 9
Minimum CAS latency time (tAA):	13.125 ns
Minimum RAS to CAS delay time (tRCD):	13.125 ns
Minimum row precharge time (tRP):	13.125 ns
Minimum active to precharge time (tRAS):	36.000 ns
Supported timing at highest clock speed:	9-9-9-24
Minimum Row Active to Row Active Delay (tRRD):	6.000 ns
Minimum Active to Auto-Refresh Delay (tRC):	48.125 ns
Minimum Recovery Delay (tRFC):	260.000 ns
Minimum Write Recovery time (tWR):	15.000 ns
Minimum Write to Read CMD Delay (tWTR):	7.500 ns
Minimum Read to Pre-charge CMD Delay (tRTP):	7.500 ns
Minimum Four Activate Window Delay (tFAW):	30.000 ns
Operating temperature range:	0-95C
Supports Auto Self-Refresh:	No
Supports Partial Array Self-Refresh:	Yes
Thermal Sensor present:	No
Supports On-Die Thermal Sensor readout:	No
Non-standard SDRAM type:	Standard Monolithic
Module type:	UDIMM
Module Height:	29 - 30 mm
Module Thickness:	Front: 2 - 3 mm, Back: 2 - 3 mm
Module Width:	133.5 mm
Reference raw card used:	Raw Card B Rev. 0
XMP Revision:	1.3
[XMP Profile 1] Module voltage:	1.50V
[XMP Profile 1] Clock speed:	933.3 MHz
[XMP Profile 1] Minimum clock cycle time (tCK):	1.071 ns
[XMP Profile 1] Supported CAS latencies:	6 9
[XMP Profile 1] Minimum CAS latency time (tAA):	9.631 ns
[XMP Profile 1] Minimum RAS to CAS delay time (tRCD):	10.700 ns
[XMP Profile 1] Minimum row precharge time (tRP):	9.631 ns
[XMP Profile 1] Minimum active to precharge time (tRAS):	28.857 ns
[XMP Profile 1] Supported timing at highest clock speed:	9-10-9-27
[XMP Profile 1] Minimum Row Active to Row Active Delay (tRRD):	7.500 ns
[XMP Profile 1] Minimum Active to Auto-Refresh Delay (tRC):	50.626 ns
[XMP Profile 1] Minimum Recovery Delay (tRFC):	260.000 ns
[XMP Profile 1] Minimum Write Recovery time (tWR):	15.000 ns
[XMP Profile 1] Minimum Write to Read CMD Delay (tWTR):	7.500 ns
[XMP Profile 1] Minimum Read to Pre-charge CMD Delay (tRTP):	7.500 ns
[XMP Profile 1] Minimum Four Activate Window Delay (tFAW):	37.500 ns
[XMP Profile 1] Maximum tREFI Time (Average Periodic Refresh Interval):	7.786 us
[XMP Profile 1] Write to Read CMD Turn-around Time Optimizations:	No adjustment
[XMP Profile 1] Read to Write CMD Turn-around Time Optimizations:	No adjustment
[XMP Profile 1] Back 2 Back CMD Turn-around Time Optimizations:	No adjustment
[XMP Profile 1] System CMD Rate Mode:	2N
DIMM#3
Memory type:	DDR3 SDRAM
SPD revision:	1.1
Manufacturer:	Corsair
Serial number:	00000000
Part number:	CMZ32GX3M4A1866C9
Clock speed:	666.7 MHz
Memory size:	8192 MB
Number of banks:	8
Row address bits:	16
Column address bits:	10
Bus width:	64 bits
Device width:	8 bits
Number of ranks:	2
ECC:	No
Module voltage:	1.5V
Minimum clock cycle time (tCK):	1.500 ns
Supported CAS latencies:	6 7 9
Minimum CAS latency time (tAA):	13.125 ns
Minimum RAS to CAS delay time (tRCD):	13.125 ns
Minimum row precharge time (tRP):	13.125 ns
Minimum active to precharge time (tRAS):	36.000 ns
Supported timing at highest clock speed:	9-9-9-24
Minimum Row Active to Row Active Delay (tRRD):	6.000 ns
Minimum Active to Auto-Refresh Delay (tRC):	48.125 ns
Minimum Recovery Delay (tRFC):	260.000 ns
Minimum Write Recovery time (tWR):	15.000 ns
Minimum Write to Read CMD Delay (tWTR):	7.500 ns
Minimum Read to Pre-charge CMD Delay (tRTP):	7.500 ns
Minimum Four Activate Window Delay (tFAW):	30.000 ns
Operating temperature range:	0-95C
Supports Auto Self-Refresh:	No
Supports Partial Array Self-Refresh:	Yes
Thermal Sensor present:	No
Supports On-Die Thermal Sensor readout:	No
Non-standard SDRAM type:	Standard Monolithic
Module type:	UDIMM
Module Height:	29 - 30 mm
Module Thickness:	Front: 2 - 3 mm, Back: 2 - 3 mm
Module Width:	133.5 mm
Reference raw card used:	Raw Card B Rev. 0
XMP Revision:	1.3
[XMP Profile 1] Module voltage:	1.50V
[XMP Profile 1] Clock speed:	933.3 MHz
[XMP Profile 1] Minimum clock cycle time (tCK):	1.071 ns
[XMP Profile 1] Supported CAS latencies:	6 9
[XMP Profile 1] Minimum CAS latency time (tAA):	9.631 ns
[XMP Profile 1] Minimum RAS to CAS delay time (tRCD):	10.700 ns
[XMP Profile 1] Minimum row precharge time (tRP):	9.631 ns
[XMP Profile 1] Minimum active to precharge time (tRAS):	28.857 ns
[XMP Profile 1] Supported timing at highest clock speed:	9-10-9-27
[XMP Profile 1] Minimum Row Active to Row Active Delay (tRRD):	7.500 ns
[XMP Profile 1] Minimum Active to Auto-Refresh Delay (tRC):	50.626 ns
[XMP Profile 1] Minimum Recovery Delay (tRFC):	260.000 ns
[XMP Profile 1] Minimum Write Recovery time (tWR):	15.000 ns
[XMP Profile 1] Minimum Write to Read CMD Delay (tWTR):	7.500 ns
[XMP Profile 1] Minimum Read to Pre-charge CMD Delay (tRTP):	7.500 ns
[XMP Profile 1] Minimum Four Activate Window Delay (tFAW):	37.500 ns
[XMP Profile 1] Maximum tREFI Time (Average Periodic Refresh Interval):	7.786 us
[XMP Profile 1] Write to Read CMD Turn-around Time Optimizations:	No adjustment
[XMP Profile 1] Read to Write CMD Turn-around Time Optimizations:	No adjustment
[XMP Profile 1] Back 2 Back CMD Turn-around Time Optimizations:	No adjustment
[XMP Profile 1] System CMD Rate Mode:	2N

Graphics

AMD Radeon HD 6870
Chip Type:	AMD Radeon Graphics Processor (0x673
DAC Type:	Internal DAC(400MHz)
Memory:	1024MB
BIOS:	113-3E17420-S4I
Driver provider:	Advanced Micro Devices, Inc.
Driver version:	15.200.1062.1004
Driver date:	8-3-2015
Monitor 1:	1920x1080x32 60Hz (Primary monitor)

Disk volumes

Disk drives

Optical drives

Network

Ports

USB


Detailed event log

Event

LOG NOTE: 2016-08-12 13:37:41, Status, PassMark BurnInTest V8.1 Pro 1018 (64-bit)

LOG NOTE: 2016-08-12 13:37:42, Status, Main Tests started

LOG NOTE: 2016-08-12 13:37:43, 3D Graphics, 3D test starting: Duty cycle = 100. Test on primary monitor (0). (x,y) = (810,429). WxH = 300x200.

LOG NOTE: 2016-08-12 13:37:49, Memory (RAM), System Memory Total: 32737MB, Test RAM allocated: 0MB, Available: 30074MB

LOG NOTE: 2016-08-12 13:37:51, Memory (RAM), Process 6, Test memory allocated at 0x0000000140030000 of size 3273MB

LOG NOTE: 2016-08-12 13:37:51, Memory (RAM), Process 8, Test memory allocated at 0x0000000140030000 of size 3273MB

LOG NOTE: 2016-08-12 13:37:51, Memory (RAM), Process 0, Test memory allocated at 0x0000000140030000 of size 3273MB

LOG NOTE: 2016-08-12 13:37:55, Memory (RAM), Process 1, Test memory allocated at 0x0000000140030000 of size 3273MB

LOG NOTE: 2016-08-12 13:37:55, Memory (RAM), Process 4, Test memory allocated at 0x0000000140030000 of size 3273MB

LOG NOTE: 2016-08-12 13:37:55, Memory (RAM), Process 9, Test memory allocated at 0x0000000140030000 of size 3273MB

LOG NOTE: 2016-08-12 13:37:55, Memory (RAM), Process 2, Test memory allocated at 0x0000000140030000 of size 3273MB

LOG NOTE: 2016-08-12 13:37:55, Memory (RAM), Process 7, Test memory allocated at 0x0000000140030000 of size 3273MB

LOG NOTE: 2016-08-12 13:37:56, Memory (RAM), Process 3, Test memory allocated at 0x0000000140030000 of size 3273MB

LOG NOTE: 2016-08-12 13:37:56, Memory (RAM), Process 5, Test memory allocated at 0x0000000140030000 of size 3273MB

WARNING: 2016-08-12 14:44:23, 3D Graphics, The 3D test was interrupted

LOG NOTE: 2016-08-12 14:45:16, Status, Test run stopped

Result summary

Test Start time	Fri Aug 12 13:37:41 2016
Test Stop time	Fri Aug 12 14:45:16 2016
Test Duration	001h 07m 35s

Test	Cycles	Operations	Result	Errors	Last Error
CPU	242	12.252 Trillion	PASS	0	No errors
Memory (RAM)	18	1.305 Trillion	PASS	0	No errors
3D Graphics	6	188460	FAIL	1	The 3D test was interrupted

TEST RUN FAILED

Serious error summary for the last test run

Serious and critical errors

No serious or critical errors

[David (PassMark)]

We don't support MemTest86+.
We only support MemTest86 (the original version).

There is a bug in MemTest86+ V5.01. It produces false positives on Test #7.
There are some details here,
http://forum.canardpc.com/threads/10...kylake-i7-DDR4
and here
http://forum.canardpc.com/threads/97...ell-Server-bug
It has been over a year since the bug was reported, but the author of Memtest86+ hasn't provided a fix as yet.

But looking at the results from MemTest86 V7.1 you posted above, it does look like there is a problem.

When you tested 1 stick at a time, where the results similar?

Try going into BIOS and playing around with the RAM config. e.g.
- Bump up the voltage very slightly
- Try running with slightly slower timings

Do you have a spare set of RAM from another vendor to try?

[xNimrodx]

Unfortunately I don't have any spare set of ram of any diff. or similar vendor
But at least I've just fixed the "freeze up" problem: for anyone interested the solution is in these 2 hotfixes
https://support.microsoft.com/en-us/kb/2645594 (you have to install this before the other)
https://support.microsoft.com/en-us/kb/2646060
Turns out it was a software problem related to some AMD CPU's architecture

But still, I can't figure out why all those issues running MemTest86 7.1
Could only run Tests on CPU #0 (no multithread support and/or program breaks when trying to use multiple processors at once, or a different one from 0)
Test #7 returns different/random errors
Test #13 took hours to run compared to a precedent testrun, returned errors only in one occasion, same ram tested with BurnIn didn't return any error after torture test.

[David (PassMark)]

I would ignore the one error in test #13.
See,
http://www.memtest86.com/troubleshooting.htm#hammer

Some motherboard have bugs in their UEFI BIOSs that prevent multi-threading. See,
http://www.passmark.com/forum/memtes...election-modes
So you can ignore that as well (until new BIOS is available).

So I think only the errors in Test #7 are off significance, and those do look like a real hardware fault. (bad RAM being the most likely cause)

[xNimrodx]

I would ignore the one error in test #13.
See,
http://www.memtest86.com/troubleshooting.htm#hammer

Some motherboard have bugs in their UEFI BIOSs that prevent multi-threading. See,
http://www.passmark.com/forum/memtes...election-modes
So you can ignore that as well (until new BIOS is available).

So I think only the errors in Test #7 are off significance, and those do look like a real hardware fault. (bad RAM being the most likely cause)

But if it is bad RAM then, why are those errors always in different addresses? and why the BurnIn test for the ram passed without issues? I can't understand it.
Every time I've run test #7, errors appeared always in different quantities and different addresses

[David (PassMark)]

RAM timings might be marginal. So errors might appear semi randomly.
BurnInTest runs in Windows. So not as much RAM is available for testing in Windows.