Nexus 4: How to do a hard reboot?

[AC Question]

My nexus 4 started updating early this morning, then it crashed and I haven't been able to get it to work since. Basically the red light goes on when I plug it in, it flashes when I plug it into my computer. If I press "on" and "volume down" simultaneously while plugging it into my computer I get to see the green android, but only for a moment before it goes black again. Please help!

 

[B. Diddy]

Welcome to Android Central! Charge it on a wall outlet for at least 4-6 hours undisturbed, then try pressing and holding Power for 15-20 seconds.

 

[Moebius05]

Tried that, doesn't seem to work.

 

[B. Diddy]

Are you able to boot into Recovery? https://support.t-mobile.com/docs/DOC-13858

 

[Moebius05]

Well, not really: basically yes, but as soon as I reach it (the screen with the green android lying on its back) it immediately turns off (=goes black). Since my cellphone has been hooked to the charger all night I have trouble imagining that the battery is empty.

 

[Moebius05]

Charged it on a wall outlet undisturbed all night. Still dead.

 

[B. Diddy]

With that kind of behavior, I'd guess that the battery has failed. A dead battery won't charge up much or hold onto charge no matter how long you plug it into a wall outlet.

 

[Moebius05]

the day before the phone crashed the battery was in fine shape and fully charged.

 

[B. Diddy]

Batteries can suddenly fail without warning, so it's still possible.

You've already tried different charging cables and wall plugs?

 

[Moebius05]

I gut the update at around midnight. The phone failed. I decided it was the empty battery. I plugged it into my computer over night. The next morning the alarm rang. Over the next couple of hours I started it several times. Sometimes it would ome on and crash after a few minutes, sometimes it would come on and do updates and crash after roughly a hundred. Then it wouldn't go on, the it would go on but only when plugged in, ect. All the time I was in a meeting, so I didn't pay proper attention. But I remember clearly that in the morning, after it crashed I plugged it in I got th "charging" battery simbol and it clearly said: "full" or "almost full". From that moment it was perhaps another three hours until the final crash. So that doesn't look like a dead battery. Anyways: the following night I plugged it into the wall, but it's still dead.

 

[B. Diddy]

Ugh. Well, this may be worse, because it could very well be a motherboard issue. Sorry, but I can't suggest anything else besides taking it to a repair shop. Good luck!

 

[Moebius05]

Thanks!