how can i force stop android is starting.....starting apps.

[iyah.ella.3in1]

ive done the power and volume button at the same time but it still not doing anything on my samsung tab 4

 

[webworkings]

Why are you wanting to stop the phone from starting? I am a tad confused here. Please give more details on what you are trying to do and what happens when you try to do it.