Why won't my Nexus 5 turn on?

[AC Question]

Nexus 5 won't turn on

fully charged Nexus 5 turned off itself won't turn on. Lately music stopped playing randomly especially when phone shaken( eg. when I run), voice commands "OK Google" turns on randomly.

 

[chrisjluc]

Re: Nexus 5 won't turn on

Try holding the volume down and power button at the same time for a few seconds to turn on your phone.
Are you on the most recently updated version of Android 5.1.1 on your Nexus 5? If not, if you get your phone working again you should keep your phone up to date.