legg wrote:

Trying to use windows powercfg command prompt.

C:\Windows\system32powercfg /batteryreport
gets
Invalid Parameters -- try "/?" for help

looks correct, sure you didn't fat-finger it?

C:\Windows\system32/powercfg /batteryreport
gets
'/powercfg' is not recognized as an internal or external command,
blah blah . . .

that's definitely wrong, shouldn't have the preceding slash