How to Generate a Power Efficiency Diagnostics Report in Windows 7

In the Windows 7 search box, type CMD
(if you do not have elevated priviledges: right click the CMD Icon and choose Run as Administrator)

at the command line type:

powercfg -energy -output \report_folder\En Energy_Report.html

the report will be placed in a folder called "report_folder" on the drive you run this command from, you can change the "report_folder" specification in the command to place the report where ever you would like it to be placed

double click the html file to view the report