Sony C5 Ultra Sensors problem

[Mitchael]

Hi friends, I need your help.
Update my sony xperia C5 ultra mobile and it turns out that I do not work the operating system, also does not work the mobile touch
And when I start the download the device is turned off
That I have to do?

[YoGem]

@Mitchael I am having some issues understanding your post... bear with me, please:

So you updated the OS and after that you had several issues, like touch screen not working...

I know that the Marshmallow update of the C5 was a bit messy, I can recommend you to try using the software repair using Xperia Companion - that will probably fix all the issues with your C5.