What is the solution when the touch test fail?

wazgehtab

1. Model Name: = ASUS_Z00AD
2. Firmware Version: = ww_4.21.40.134_20160825
3. Rooted or not: = NO
4. Frequency of Occurrence: = whenever I try to write something
5. APP Name & APP Version (If your issue relates to the app): = no special app

i cant type all letters.

Anders_ASUS

1 backup

2 factory reset

if no improvement

3 send to service