pressurization problem with md-11

[Minion 0]

Hi!Since yesterday I'm having problems with the md-11 cabin pressure. As soon as I put the throttle to max every bleed air goes off, as soon as that happens I see the pressure put to 15000-20000 ft.Did anyone have this kind of problem before?Thanks,Sincerely, Thomas Achillep.s I don't start from cold and dark, but with the mode After Engine start( something like that ).

[Minion 0]

just to say I CANNOT turn the bleed air back on. They'll turn back on automatickly after I put the throttle back to minimun power