Why is my iPhone 4S not booting?

I had iOS 8 (jail broken) on my device. I decided to restore it. I restored it internally using settings. During the restored there came a point where it was booting like it should with a bar underneath. I waited and waited it never booted up. My home button is broken. My phone charges when I connect it to power or my laptop running Windows. Windows does not detect anything. As soon as a disconnect it from power after 10-20 minutes it switches off saying low battery.

I would like to add one thing:

When I boot my iPhone and immediately I press the "volume up" button for sometime the apple logo and the bar beneath it turns a bit warm (it seems as if f.lux is working).

But only the screens turns warm and nothing else.