My lenovo a6000 is not opening?

I slept around 3 am and woke up around almost 1 pm and then when I check my lenovo. It was not working, it showed me a blank screen. I pressed the power off multiple times and it keeps blinking showing me a white screen then black afterwards I tried to remove the battery and waited for a couple of minutes and tried it again. I tried charging it but it only keeps showing me that its blinking