Divergent Reports

[David (PassMark)]

Could be the flash drive the culprit?

Very unlikley.
Intermittently bad RAM is more likley

[MHAlmeida]

Likely the RAM is bad, intermittent errors are still valid.

For more on troubleshooting:
https://www.memtest86.com/troubleshooting.htm

Thank you for the quick reply.

I’ve just discovered that the flash drive I was running the memtest86 was defective. But the program loaded without issues.

So, I’ve replaced for a new flash drive and 10 hours in and zero errors.

Could be the flash drive the culprit?

Thank you.

[Simon (PassMark)]

Likely the RAM is bad, intermittent errors are still valid.

For more on troubleshooting:
https://www.memtest86.com/troubleshooting.htm

[MHAlmeida]

Hello all,

This is my first post here and I was wondering if you could help me out.

I´ve just bought a Yoga 7i laptop from Lenovo and I´ve decided to run memtest86 to check the memory because it´s soldered to the motherboard.

I´ve ran a 10-pass test and it passed without any issues, but I had to get a replacement due screen issues.

The replacement arrived an I´ve noticed that sometimes things were taking more time than usual to open and Lenovo app froze for a couple seconds when I was trying to adjust it.

I thought it was odd and decided to run memtest86 again and sure enough an error showed up. Actually two errors on "Test 7 - Moving Inversions".

So, I´ve stopeed the test and restarted all over again running the exact same 10-pass test and this time no errors were found.

Which test should I believe?

Is there any aditional testing I can run to make sure my system is good?

Should I update the Bios or something?

I´m still in the return window and I don´t want to get a third replacement unless I have to but at the same time I don´t want a defect ram soldered to the motherboard.

I´ve attached both reports to this post.

Any advice is greatly appreciated.

Do I have a defect ram or not? What would you do if you were me?

FIRST REPORT:

Summary

Report Date	2021-10-26 05:32:58
Generated by	MemTest86 V8.0 Pro (64-bit)
Result	FAIL

System Information

EFI Specifications	2.70
System
Manufacturer	LENOVO
Product Name	82LW
Version	Yoga 7 14ITL5
Serial Number
BIOS
Vendor	LENOVO
Version	F5CN40WW
Release Date	01/14/2021
Baseboard
Manufacturer	LENOVO
Product Name	LNVNB161216
Version	SDK0J40688 WIN
Serial Number
CPU Type	11th Gen Intel Core i7-1165G7 @ 2.80GHz
CPU Clock	4098 MHz
# Logical Processors	8 (4 enabled for testing)
L1 Cache	4 x 80K (396551 MB/s)
L2 Cache	4 x 1280K (106657 MB/s)
L3 Cache	12288K (52947 MB/s)
Memory	8006M (26753 MB/s)
DIMM Slot #0	4GB DDR4 PC4-25600
	Micron Technology / 4ATF51264HZ-3G2J1
	3200 MHz
DIMM Slot #1	4GB DDR4 PC4-25600
	Micron Technology / 4ATF51264HZ-3G2J1
	3200 MHz

Result summary

Test Start Time	2021-10-26 01:07:43
Elapsed Time	4:24:58
Memory Range Tested	0x0 - 2B0C00000 (11020MB)
CPU Selection Mode	Parallel (All CPUs)
ECC Polling	Enabled
# Tests Passed	133/134 (99%)

Lowest Error Address	0x1F84FA97C (8068MB)
Highest Error Address	0x1F84FA97C (8068MB)
Bits in Error Mask	0000000000004000
Bits in Error	1
Max Contiguous Errors	1

Test	# Tests Passed	Errors
Test 0 [Address test, walking ones, 1 CPU]	10/10 (100%)	0
Test 1 [Address test, own address, 1 CPU]	10/10 (100%)	0
Test 2 [Address test, own address]	10/10 (100%)	0
Test 3 [Moving inversions, ones & zeroes]	10/10 (100%)	0
Test 4 [Moving inversions, 8-bit pattern]	10/10 (100%)	0
Test 5 [Moving inversions, random pattern]	10/10 (100%)	0
Test 6 [Block move, 64-byte blocks]	10/10 (100%)	0
Test 7 [Moving inversions, 32-bit pattern]	9/10 (90%)	2
Test 8 [Random number sequence]	9/9 (100%)	0
Test 9 [Modulo 20, ones & zeros]	9/9 (100%)	0
Test 10 [Bit fade test, 2 patterns, 1 CPU]	9/9 (100%)	0
Test 11 [Random number sequence, 64-bit]	9/9 (100%)	0
Test 12 [Random number sequence, 128-bit]	9/9 (100%)	0
Test 13 [Hammer test]	9/9 (100%)	0

Last 10 Errors

2021-10-26 05:29:38 - [Data Error] Test: 7, CPU: 6, Address: 1F84FA97C, Expected: 7FFFFFFF, Actual: 7FFFBFFF

SECOND REPORT

Summary

Report Date	2021-10-26 10:58:30
Generated by	MemTest86 V8.0 Pro (64-bit)
Result	PASS

System Information

EFI Specifications	2.70
System
Manufacturer	LENOVO
Product Name	82LW
Version	Yoga 7 14ITL5
Serial Number
BIOS
Vendor	LENOVO
Version	F5CN40WW
Release Date	01/14/2021
Baseboard
Manufacturer	LENOVO
Product Name	LNVNB161216
Version	SDK0J40688 WIN
Serial Number
CPU Type	11th Gen Intel Core i7-1165G7 @ 2.80GHz
CPU Clock	4099 MHz
# Logical Processors	8 (4 enabled for testing)
L1 Cache	4 x 80K (396552 MB/s)
L2 Cache	4 x 1280K (102753 MB/s)
L3 Cache	12288K (52893 MB/s)
Memory	8006M (26812 MB/s)
DIMM Slot #0	4GB DDR4 PC4-25600
	Micron Technology / 4ATF51264HZ-3G2J1
	3200 MHz
DIMM Slot #1	4GB DDR4 PC4-25600
	Micron Technology / 4ATF51264HZ-3G2J1
	3200 MHz

Result summary

Test Start Time	2021-10-26 06:06:34
Elapsed Time	4:44:19
Memory Range Tested	0x0 - 2B0C00000 (11020MB)
CPU Selection Mode	Parallel (All CPUs)
ECC Polling	Enabled
# Tests Passed	140/140 (100%)

Test	# Tests Passed	Errors
Test 0 [Address test, walking ones, 1 CPU]	10/10 (100%)	0
Test 1 [Address test, own address, 1 CPU]	10/10 (100%)	0
Test 2 [Address test, own address]	10/10 (100%)	0
Test 3 [Moving inversions, ones & zeroes]	10/10 (100%)	0
Test 4 [Moving inversions, 8-bit pattern]	10/10 (100%)	0
Test 5 [Moving inversions, random pattern]	10/10 (100%)	0
Test 6 [Block move, 64-byte blocks]	10/10 (100%)	0
Test 7 [Moving inversions, 32-bit pattern]	10/10 (100%)	0
Test 8 [Random number sequence]	10/10 (100%)	0
Test 9 [Modulo 20, ones & zeros]	10/10 (100%)	0
Test 10 [Bit fade test, 2 patterns, 1 CPU]	10/10 (100%)	0
Test 11 [Random number sequence, 64-bit]	10/10 (100%)	0
Test 12 [Random number sequence, 128-bit]	10/10 (100%)	0
Test 13 [Hammer test]	10/10 (100%)	0

Thank you!