memtest86 pass and kernel whear error 20

[aleksey9]

hi.i've passed memtest 86(4 rounds) 17 december 2023 11:34:52(file properties).and i got whea error 20 at 11:35:05 in event viewer.i've passed memtest86 before but it's only one error whea 20.maybe it's not saved it was several moths ago.
what does it mean?i also have passed prime 95 small fft 9 hours large fft 3 hours.test mem anta absolut 10cycles extreme 3cycles.windows memory diagnostic tool extended 1pass.

- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
<Provider Name="Microsoft-Windows-Kernel-WHEA" Guid="{7b563579-53c8-44e7-8236-0f87b9fe6594}" />
<EventID>20</EventID>
<Version>0</Version>
<Level>4</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x4000000000000800</Keywords>
<TimeCreated SystemTime="2023-12-17T08:35:05.2374685Z" />
<EventRecordID>1</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="472" />
<Channel>Microsoft-Windows-Kernel-WHEA/Errors</Channel>
<Computer>DESKTOP-2S3GVGR</Computer>
<Security UserID="S-1-5-18" />
</System>
- <EventData>
<Data Name="Length">316</Data>
<Data Name="RawData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ata>
</EventData>
</Event>

[David (PassMark)]

The Memtest86 log didn't seem to contain any errors.

WHEA is Windows Hardware Error Architecture. It collects and report hardware errors into the Windows event log.

Are you motherboard drivers up to date?

According to Google, Event 20 seems to be some type of bus error.