[Q] Rebooting after a couple of minutes topic

I have an htc one from sprint that I have successfully unlocked and rooted. I recently decided to flash a 4.4.2 kitkat rom to it and when I do, it pops up with htcdialer not responding and eventually crashes and restarts.

So, I decided instead of risking a possible brick or something, I would restore my backup....which I did but now even my restored version does the same thing.

Any idea what happened? What is causing this issue? Is it a bad rom flash? Is it a bad kernel? A bad radio? I have no idea what could be causing this issue but even restored it has the dialer issue and ends up rebooting about every 2 mins....all night!