USB device not recognized

[SonyXperiaE5112]

Translation via Google Translate:

Computer Does not detect the phone. I have Windows 8.1 the error pops up. The USB device is not recognized. What to do?

Komputer Nie wykrywa telefonu. Mam Windows 8.1 wyskakuje błąd Nie rozpoznano urządzenia USB. Co zrobić?  

[Qatrium]

@SonyXperiaE5112

I used Google Translate to find the meaning of your message. Kindly post your future questions/feedbacks in English so we can assist you, this is an English based forum.

Did you install Xperia Companion? It also installs all the drivers needed for you phone.