Help me with my Dead nexus 4 (hibernation mode?) topic

Hello everyone.

3 days ago, I was charging my nexus 4, I checked and it was at 80%, and after a while, I rechecked it to find it dead : no boot, no charging icone, nothing. Even if im familiar with this problem (happened to me once before I replaced the battery), I tried different methods to resolve the issue : pressing volume down and power button and plugging charger or usb cable million times, letting the phone charges over night, charge it on computer, taking off the battery and trying to charge it seperatly (saw a thread on this forum), nothing happened, just a blinking red LED whenever I press volume down or up and power button over 10-15 sec and plug it. I even checked the battery with a multimeter and it emmites voltage, so I think the battery is good (1 and a half months old).

Please help me with this.

P.S: the charger used when the phone died was a faulty : if u touch it or expand (till tight) the wire, it stops charging, and u have the press the head tight so it goes back to function, and the one I used for testing all I said above was a good one.