ups85

already the second time now, my main computor shuts down and I get a blus screen announcing an emeergency shut down, probably due to a out dated driver. On the second computor I use Active Sky and Flight Keeper. Of course this always happens, just before take of, and before I made a save of the current flight. on the beginning of the message i get the following text driver_irq_not_not_less_or_equal is WideFS the cause or something else? See also message on atteched Word File thanks for your help Ulrich Schlaefli