Samsung s7 stuck in boot after installing twrp 3.0.0

[AC Question]

After installing TWRP on my samsung s7. It is stuck in boot animation. I cant turn it off as i have no access to the battery and all i can do is restart it (Hold power + volume down for 7 seconds). I have tried starting it in safe mode - doesn't work and i have tried putting in bootloader/recovery and all it does is show the samsung logo. PLease help me the worst bit is its my dads phone and he will kill me!!!! Thanks

 

[blade22222]

Try getting it into download mode. Volume down/home button/power button. If you can get into download mode you can reflash the bootloader.