Cannot boot into Android after freezing Blink Feed Launcher in HTC One M7
Blink Feed Launcher is the launcher app for your HTC One M7 and with this frozen you'll be unable to use your phone.

Factory reset will be the simplest and easiest option available, and since you're using Titanium Backup Pro, I must assume that you have a backup of all your user apps, and as such you can restore them after the factory reset. If not then you'll have to re-download them all from Google Play Store.