Reboot Problem

[Xuvetyn]

I've run across the dreaded reboot problem with a little bit of a twist. The issue arose out of nowhere today and I've not had much luck with any of the solutions offered in the threads here. I've booted to recovery to try a factory reset, but it restarts again before I can get anywhere. I've also tried constantly mashing the power button with it plugged into a USB port, which sometimes will allow it to progress a little. It then says it's optimizing apps (as in an OS update) and then reboots partway through, usually around the 80s.

It's an unlocked N5 on AT&T running stock 5.1 about 2 months past warranty (of course). No prior battery issues, or issues of any kind at all, really, until it took a mind of its own at recess duty today. Any help would be appreciated.

Thanks,
Brian

 

[Rukbat]

Start in Safe Mode. If it works, you have a bad app. Then it's a matter of eliminating them one by one.

If not, try reflashing the ROM.

If that still doesn't fix it, it's a hardware problem, and you have to decide whether to bring it in to AT&T, find an independent repair shop or replace it.

 

[Xuvetyn]

Unfortunately, I can't do either of those things because I can't get it to do anything other endlessly reboot. When I hold the power button and volume down, it will go into the recovery mode, but it will immediately reboot before I can do anything in there.