My asus zenfone 2 doesn't boot system after marshmallow update

[AlcideF]

Hi everyone,
Yesterday i tried to install the marshmallow update using TWRP. It was the first time i tried that so i just followed tutorials. After few minutes of installation, my phone shuts down, so I thought it finished the installation. I still had 50% battery. But now, when i try to turn it on, nothing appears after the phone vibrates, not even the asus logo. I can't access to recovery mode and it keeps rebooting because there are vibrations every 2 minutes.
I really need your help, thanks.

 

[Cooler299]

Go to XDA forum for your device. Which ROM did you install? Go to that forum for that particular ROM. They normally have solutions mentioned in case something goes wrong. One has to be very careful while dealing with such installations. The worst case could be that the device has been bricked.