PowerShell for Windows Admins

Sep 2 2012   12:43PM GMT

Windows 8 RTM startup

Richard Siddaway Richard Siddaway Profile: Richard Siddaway

I was looking at Win32_OperatingSystem today and noticed that the last boot up time wasn’t right

PS> Get-CimInstance -ClassName Win32_OperatingSystem | select LastBootUpTime

17/08/2012 10:02:11

17 August isn’t right as I know I did a cold start this morning – or at least I think I did!

Windows 8 starts up much faster than Windows 7

Looking at the System event log the last but one entry last night was event id 64 – “The system is entering sleep.”

Looks like using the Shutdown option from Settings – Power only puts the machine to sleep.

I tried using the PowerShell stop-computer cmdlet.

Shutdown took longer than usual. 

I found an entry in the system log stating

“The kernel power manager has initiated a shutdown transition.”

Startup then took much longer than usual

PS> Get-CimInstance -ClassName Win32_OperatingSystem | select LastBootUpTime

02/09/2012 19:27:41

So looks like use the Settings – Power – Shutdown option to put the machine into a deep sleep and get very quick start up.  Use stop-computer and completely shutdown but have longer startup times.

Question now is does the deep sleep put any drain on the battery for laptops? I’ll try and find out.

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