redmi 4 not turning on

redmi 4 last night battery drained fully morning connected to charger presses power button mi logo appeared stuck with same mi logo after 20min so again pressed power button continuously to turn it off , since then no beep, no led , no response tried with multiple ways connecting with laptop usb , different charger , different connecting point , even removed & connected battery pin , No luck , pls suggest almost imp data & reports from past 3days am stuck