Re: [Q] T-mobile HTC One S "Process system no responding" and no sound or video playb
This may not be a solution to your problem but its definitely worth to try.
1. Backup all your data.
System -->backup and restore
Backup your sdcard (fotos,music, etc.)
2. Do factory reset in
System -->backup and restore -->reset phone
After that set up your phone. Restore apps only from your Google account ( i.e. clean install from Google play).
If this won't sort out your problem go thru warranty and get it fixed.
Let us know how you got on.
Sent from my HTC One S using xda app-developers app