wiko lenny dead

hello . I have a wiko lenny which is dead no booting no charging no responding but it is detected in the pc and accepts flashing . i flashed it many times but no result. so could it be an emmc fault or what? i also shorted the colo point with gnd and flashed but still the same . on the power supply when i press the pwr button it responds and gives me 0.24-0.35 amps. any solutions and thanx in advace