c3 won't power on

[mkt]

I cannot powermy device on, I don't know what is the problem

[MarlonUk1]

charge the device 2-3 hours using the wallmount charger.

push power buttong plus volume down at the same time

perform software repair using Xperia Companion

[Gezart]

Hello, i have xperia C3 Dual.. Since os upgrade to be 5.5.1, my phone suddently turn off cause the battery change from full be 0% when i open randim application. May i get some info or solution?