The tap touch is not responding - HTC Touch P3450 Smartphone

use the mode switch the thumb button on the right right to get to the setup menu then initialize the camera to its factory settings this will enable the screen.
manual is here
http://pdf.crse.com/manuals/2887191131.pdf

Your touch pad need to be replaced. I had the same problem and order a complete face lift which includes the touch pad from ebay. It was included aslo the special tools needed to remove the screws. There many videos showing how to desasemble the phone in youtube, just search with your model and you will find videos showing all the dtails how.
Please not that the problem is with touch pad which is the one you touch directly on it, is only vinil cover and is working as a keyboard. Under touch pad is located the lcd display of the phone which other part .

tap start>setting>system>screen>align screen, the calibration starts tap on center of +

you may need a new digitizer you can purchase it on ebay

I solved the problem by re-calibrating the screen. Go to the home icon on the screenn tap preferences, date and time, then tap digitizer. Then follow the prompts and tap exactly on the target Xs.
Thanks!

Calibrate it on the setting menu. if it don't work, then go see a technical specialist

YEA PLEASE CAN YOU HELP MEE BECAUSE MY Sylvania SMPK8854B WILL NOT LETT ME TOUCH THE SETTING AND I REALLY NEED HELP!! WITH MY Sylvania SMPK8854B!!
THANK YOU THEY MUCH!♥

ur touch panel is faulty u have to go to service centre , there are 3 things coupled together Lcd screen then touch panel and then front housing for protection of both , u might dropped it , if ur screen is working partially i mean if it responds to taps at some region of screen then it may be a dust inside the housing u have to clean it from inside if u can , otherwise if it completely not responding then it is faulty touch panel , it will cost u around 50 , 60 $

The touch pad is dead...it's a hardware issue...go to the vendor or workshop...within a year it is replaced for free.Good luck.

you needto replace the ants which live behind the touch screen
get some fresh once from your garden (or park) if you don't have a garden

Open phone( oh not allowed or warrenty void)
WHAT warrenty?
anywat open phone and you will see a few dead ants behind the screen.

Replace ants with fresh live ones
Close phone (quickly or ants excape)

power on phone

Never do hard reset on phone
It will electrocute some ants