People who go out often have to take a laptop and work anywhere they want. Generally speaking, laptop power can persist for more than 3-4 hours, but sometimes you will find that it doesn't take long to Win7 the lower right corner of the battery instructions to the police. If this happens suddenly, the battery life problem can be eliminated, but it is because a program running in the system consumes too much power. We can use Win7 's own power efficiency analysis tool, to identify the system of large consumers.
To turn on the Power efficiency analysis tool, we need to open the Command window as an administrator. Open Start-All Programs-attachments, right-click Command prompt, and select Run as Administrator.
Run the command prompt as an administrator
If you jump out of the User Account Control window, press Yes to continue.
Click "Yes" to allow running
Type Powercfg/energy in the command window and enter.
Enter Run command
To start the monitoring system:
Start monitoring the system