Windows 7: Check Your System’s Power Efficiency
By running a Power Efficiency Diagnostics Report, you can view an analysis of your system and check common energy efficiency and battery life problems as well as check for errors and warnings for your power setup and hardware.
First you will need to access an elevated command prompt, to do this:
1. Click the Orb (Start button).
2. Click All Programs.
3. Go into Accessories.
4. Right-click on Command Prompt.
5. Select Run as administrator.
6. When the UAC prompt appears, select Yes.
Once you have your elevated command prompt, follow these steps:
1. At the command prompt, input the following:
powercfg -energy -output %USERPROFILE%\Desktop\PowerCFG_Analysis.html
2. A 60 second analysis of your computer system will then be executed.
3. When completed, a summary will be displayed.

4. Go to your Desktop and find the PowerCFG_Analysis.html file and open it to view the report.




Bug said on May 24, 2009
Got an error when typed in command.
Could be useful though!
mydty2 said on May 27, 2009
it says invalid parameters
Anonymous said on May 29, 2009
Thanks,
I need to check this :D
Iza said on November 26, 2010
i tried this and success! thanks for this useful information.
LIKE!