LG G flex 2 not turning on While i try to root it

Hi everyone i am new here and i have g flex 2 LS996 which i tried to root but at download mode when i hit the last step LEAVE my phone screen turned off and slow blue led light is continuosly blinking, i tried to turn it on every way but its not turning on, please help me and also its not entering in download more anymore. please help me guys im very stuck and tense because i have spent enough money to buy it. :(

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