During the time when eventviewer logs show the computer was on sleep mode, can the computer be possibly used?

Question

Eventviewer logs show the computer (lenovo ultrabook with intel core i5, windows 10) was on sleep mode from noon to 3 pm on November 4th, but a Slack message seems to have been sent at 2 pm on the same day from the computer according to the time stamped on Slack. Is it possible?

Could anyone please advise me? I am the manager of a small business that I run. Using my computer that I rent to one of my employees, a Slack message was sent out by her at 2 pm during the time when Event viewer logs show the computer was on sleep mode. The computer was on sleep mode the reason for which is "System Idle." The "source" was "Microsoft-Windows-Kernel-Power" according to the event viewer.

I initially thought that the message was sent from her smartphone. But whenever she sends slack messages out, the messages show they were sent from her smartphone at the end of the messages. I do not think that she used another PC, because she does not know how to install Slack in a computer or log on to her Slack account with someone else's computer.

I searched around to find a solution to figure out what was going on with my computer, but could not find a clue.

Shig

Answer 1

I apologize about my bad English.　I will correct one sentence below.

Correction:

But whenever she sends slack messages out, the messages show they were sent from her smartphone at the end of the messages.

→　
But whenever she sends slack messages out from her smartphone, the messages show they were sent from her smartphone at the end of the messages.

Answer 2

Hello,

In some instances, due to the IDLE metric calculation in Windows 10/11 the status may not report correctly on even levels. To make sure, I would recommend using the next detailed power state reports:

powercfg /sleepstudy

powercfg /systemsleepdiagnostics

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