Ok im ripping my hair out, I was using flight simulator x just fine a day ago, then I was just screwing around with some settings of start up state in the pmdg 737 and now suddenly it starts up in this weird blend of cold and dark and default. Before you say it, I know, I should be able to turn on the pmdg 737 from cold and dark but I dont, and to be perfectly honest have no intention of learning. It is of no use to me. MY QUESTION: How to make ALL planes start up in the default engines on irs aligened and so on, how do you set so it all goes back to default setup. 

Thanks, isaac

It sounds like you might have changed your default flight.  Set everything the way you want it, and save that flight again, checking Make this my Default Flight.  You may have to do this twice to make it "stick".

 

Hope this helps,