If you have anything mapped to rpm etc, check to make sure you've not been playing with the mapped switch/button/slider/rotary - or anyone else has moved it. Found this out the hard way as I constantly fiddle with my throttle when reading online - went to up, no power, so stopped, .efluffied out, tried again, no power (on my 3rd attempt, found I'd turned my rpm real low and was only able to deliver the power it was set to)
Wurz