Troubleshoot Power Management Settings in Windows 7

Windows Vista includes a command line tool, Powercfg.Exe, that you can use to configure power management settings.
 
Windows 7 introduces a new switch, -energy which…
  • provides a comprehensive report of those settings;
  • offers diagnostics that can indicate which applications or devices might be causing power management issues (such as a USB driver not entering suspend)
  • shows what power management settings you can configure differently for better results.
 At an elevated command prompt, simply enter:

 

POWERCFG –ENERGY –OUTPUT <path\filename>
 
The tool will observe your computer for 60 seconds, and then create a file called ENERGY-REPORT.HTML in the path you specified. Simply double-click on this file to see what’s going on.
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