If your Windows 7 laptop isn’t getting the battery life you expect, or it experiences power-related issues, such as the inability to go into standby or hibernate mode, the problem usually lies with incorrectly configured power-management settings. Windows 7’s Power Efficiency Report can help you sniff out potential problems. Type search for CMD from the Start menu, run it as an administrator (right-click cmd.exe onthe menu and choose Run as administrator).
From the command prompt, type powercfg -ENERGY (include the space) to scan your system, and after about a minute, you’ll
find a file called energy-report.html in your \windows\system32 folder. Copy the report to another location and open it (you’ll get a file-not-found error if you try to open it from the system32 folder) for detailed information about what system devices or settings are throwing a monkey wrench into your power management.
From the command prompt, type powercfg -ENERGY (include the space) to scan your system, and after about a minute, you’ll
find a file called energy-report.html in your \windows\system32 folder. Copy the report to another location and open it (you’ll get a file-not-found error if you try to open it from the system32 folder) for detailed information about what system devices or settings are throwing a monkey wrench into your power management.
