The power button not work, I replaced the power button and test everything working fine.. Next day, I power button to turn on the phone, the touch screen not respond. I can not factory rest the phone, I restore to stock on download mode. The screen touch still not responding.

Is any idea what may cause it? The screen show no sign of crack or damage. I also check all cables are connect back and phone boot normally. Screen touch still no respond. :confused::confused: Please be advice. thanks