Ipad screen turns on and off repeatedly
My iPad won't stop turning on and off repeatedly. I have no control over what is doing. I don't get the home screen at all, just the apple symbol then nothing. I have tried pressing the home button and power button at the same time every time the apple symbol appears over and over as suggested online but it just won't stop the cycle. Appreciate any help bearing on mind I don't have access to iTunes at the moment. Thanks
iPad mini 4 Wi-Fi