My phone is stuck in a boot loop

my Samsung gal. s4 is stuck in a boot loop where the Samsung logo flashes on and off
I can't figure out how to
* turn it off (unless battery is taken out)
* boot into safe mode
* boot into recovery mode
I have looked at videos not helpful
Key combinations do nothing except for Volume down+ power+ home which asks me if I want to download a custom OP Volume down to cancel volume up to download, pressing vol. up does nothing
I already tried a new battery did not help
please don't talk to me about broken/stuck power button because it worked before this happened
please help

Asked Apr 07, 2016

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