Search notes:

Windows service: EventLog

TODO

In PowerShell: 
get-eventLog system | select-object -unique -expandProperty source
With wmic.exe. The command takes quite some time: 
c:\> wmic ntevent where "eventType<3 and logFile = 'system' and timeGenerated>'20190531'" get eventCode, eventIdentifier, recordNumber, sourceName, timeGenerated, type
c:\> wmic ntevent where "recordNumber = 5710098" get insertionStrings

See also

The registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\EventLog
Windows Services

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