Pixhawk's LEDs State and etc

I think that my Pixhawk is abmormal, so I’m writting this topic.
First, about my Pixhawk’s LEDs.
If the Pixhawk is connected to PC, ONLY turn on the light of section FWU and IO’s PWR. Maybe I think(you know) that first, ACT LED of IO section must be on, we can continue next step. But, I can’t do next step in Q Ground Control and other setup program, because of this problem.

Sometimes, a guide phrase at Q Ground Control appears associated IO(~~start to fail px4io ~~)

Is there a problem with my Pixhawk?
How can I do solve this problems?