Why won't my Nexus 5 start?

[AC Question]

Nexus 5 wont start

My nexus 5 just randomly shut down and now whenever I try to restart it, it tries to optimize all the aaps but fails to do so and then shuts back down again. What should I do?

 

[B. Diddy]

Re: Nexus 5 wont start

Welcome to Android Central! Are you able to boot into Recovery? If so, try wiping the cache partition: http://forums.androidcentral.com/nexus-5-rooting-roms-hacks/352008-guide-nexus-5-recovery.html