Sleep Mode Help

rctneil · 15 Apr 2011 at 10:38

I put my system into sleep mode last night and found it switched fully on this morning.

If I go into Event Viewer, what sort of things should I be looking for to find out what happened?

Running Windows 7 Pro 64

Neil

Philtor · 15 Apr 2011 at 11:09

There's a hidden tool that should be able to help you with this. clicky

SourChipmunk · 15 Apr 2011 at 11:50

In the Sytem Event logs, check to see if it was restarted by the Windows Updater service. Microsoft just released a couple of critical security patches, so if you have automatic updates enabled then it may have restarted itself to install them.

If it was unintentional, you should see an Event ID 6008 in the System Event Log.

SiriusB · 15 Apr 2011 at 15:23

Code:

powercfg -requests

If anything is listed, it is preventing sleep. If nothing is listed, you may have to dig a little deeper:

Code:

powercfg -energy -output C:\report.htm

Any errors should be dealt with. USB and mouse errors you can probably ignore [I get these and my PC sleeps without issue]. Warnings can also be ignored.

If after correcting any errors your PC is still being weird try turning off Wake on LAN in your NIC settings. Also check your event log for when your PC woke up and see if any Scheduled Tasks kicked off around that time.