Command option Sample:powercfg /SYSTEMPOWERREPORT

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powercfg /SYSTEMPOWERREPORT オプション

powercfg /systempowerreport /output "sleepstudy.html"
    Powercfg command-line options | Microsoft Docs : http://docs.microsoft.com/en-us/windows-hardware/design/device-experiences/powercfg-command-line-options
powercfg /SYSTEMPOWERREPORT (Windows 10) in an elevated CMD prompt produces a prolix report at C:\WINDOWS\system32\sleepstudy-report.html
    power options - Windows shutting down rather than hibernating when battery level critical - Super User : http://superuser.com/questions/1230454/windows-shutting-down-rather-than-hibernating-when-battery-level-critical
powercfg /systempowerreport and it will tell you where it saved the report file. Open it. There will be "Power estimation" sections with very detailed information on estimated wattage consumption by process/device. You'll need a lot of patience to analyze it but it could be eye-opening
    XPS 13 9360 - Battery only lasts 4 hours. This isn't normal is it? : Dell : http://www.reddit.com/r/Dell/comments/6ofuxx/xps_13_9360_battery_only_lasts_4_hours_this_isnt/
powercfg /systempowerreport (copy and paste the browser html link into the forum)
    BSOD from sleep - Page 2 - Windows 10 Forums : http://www.tenforums.com/bsod-crashes-debugging/84599-0x00000119-ntoskrnl-exe-16c310-2.html

powercfg のオプション一覧