touch screen doesnt work

view story

http://forum.xda-developers.com – hello, my brother asus tf300t tablet has a problem, touch screen doesn't work perfectly so i did factory reset and installed official 4.1 (it also had 4.1) it didn't work again, finally i wiped data when it started up touch screen didn't work anymore but i can increase or decrease volume or turn on/off screen by power button., so what should id do to fix this problem? (HowTos)