I have a Spectre Folio (ProdID 4RJ01AV, Model 13t-ak000)
The charging light goes on while plugged in, I left it charging overnight.
Pressing the power button lights it up, but there is no further action.
Long press of power turns it off, but there is no change on power up.
Pressing the mute button (with/without 'fn') does not turn the mute indicator on. The keyboard backlight never turns on.
ONCE I saw the power button turn off for 2 seconds and come back on.
What other keypress combinations should I try while powering on?