I've been loyal to HTC since the Incredible (I had that, the One, and now the 10, while hubby has stayed with Motorola this whole time).
Has anyone else found, since the update, that any time they reboot, they continuously get the HTC terms of service notification? I'm getting that EVERY SINGLE TIME I reboot. And I click my response, and it goes away, until the next time I reboot.
I'm not getting the problem. However whenever I get weird stuff like that, the first thing I try is to clear out the phone's cache partition. It's a little involved but pretty safe. (I've never bricked my phone doing it)
To wipe the cache partition, follow these steps:
Be sure the phone is off.
Press and hold the Volume Down key.
Turn the phone on by pressing the Power key until the phone vibrates, then release Power.
Continue holding the Volume Down key.
Release the Volume Down button when the black screen with red and blue lines of text appears.

Press the Volume Down button repeatedly until reboot to bootloader is highlighted, then select it with the Power button.
The device will display a white screen with colored text.

Press the Volume Down button repeatedly until BOOT TO RECOVERY MODE is highlighted, then select it with the Powerbutton.
The screen will display the HTC screen, and then turn black.
(If a Red Triangle appears, hold down the power button and push Volume Up.)
After several seconds, another black screen with red and blue text will appear.
Press the Volume Down button repeatedly until wipe cache partition is highlighted, then select it with the Power button.

Press the Power key to select wipe cache partition.
Once complete, press the Power key again to select reboot system now.
The phone will start, hopefully without the Terms of Service or I would answer it one more time. Good luck!