What to do my sony xpreia stuck on logo and keep restarting if it open

my sony xperia m4 stuck on logo and sometimes it opens and keep restarting and stuck again on logo and if you turn on wifi or mobile data it restart and stuck again on logo and when i take it to the repair center they said to me the Internal memory

is Damaged and you need a new board for your phone !!!!!!!

thats not Logical becuase it sometimes open and i could and i did go to the file commander and see my files on the Internal memory...... i dont know what to do ?????

all these problems appeared after one week of the Marshmallow update then i Return it

to lolipop and it stilled the same proplem ...):

please tell me what to do ...?

and if i got a board tell me how to replace it by my self because the repair center is too far from my place ....

thanks very much


posted by Mohmmad.

Answer this question I have this problem too

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