Pixhawk Red Light and Connection Problem

Yesterday, I was calibrating my controller. Everything was fine besides a servo which has been misconnected (upside down) and connected to Pixhawk directly. Pixhawk was connected to PC, and was also getting power from it’s power module. So, I connected power module with ESC and the Pixhawk gave an error. There is a stable red light, and now I cannot connect to my Pixhawk. I can’t see it on my PC’s device manager either. Power comes from the outputs the way it suppoused to come. What is wrong with it, what should I do? Is the problem fixable?

update: now it is pink.