Here's a strange one...I had rebooted my Nexus 5 running OTA-7 stable and then installed some updates for Fluffy Chat and Calendar app, then I opened a private tab on Morph and was surfing the internet for about five minutes, then all of a sudden, my screen went black.
I immediately pressed the power button and the screen lit up again for a second or two, then went dark again, so I pressed the power button again and this time, the "shutdown/reboot" dialog popup displayed a few times for a second and I tried to tap outside of the popup so that it would disappear. Then the phone shutdown and attempted to reboot- it got as far as displaying "Google" and an unlocked padlock against a black screen. After displaying "Google" for about eight seconds, the screen went black again and about three seconds later, the same screen displayed, but only for a half second.
Now, every time I press the power button to turn on my phone, the same boot loop happens ("Google" for eight seconds, then again for half a second). I even tried to boot into fastboot (hold down volume down and power buttons), and the fast boot screen displays for only approximately one second, then the same boot loop occurs.
I disconnected the battery and held the power button down for greater than thirty seconds in order to drain the electrical capacitors, let go of the button, and reconnected the battery in hopes that this would fix the issue; however, that hope was disappointed. I repeated this procedure again to no avail.
Does anyone know what I should do next?