S3 mini won't turn on after trying to root with kingo root

So Im really frustrated right now because I was trying to root my old s3 mini using kingo root. It supposed to be one of the easier methods to root android but it somehow went wrong. Now my s3 mini wont turn on. When I press power button it vibrates and model name shows up but after that the screen goes black and it repeats. Its like non stopping loop. I cant also go to recovery mode. Has anyone any idea how to fix it?

G920T stuck at T-MOBILE screen after using Kingo in-phone root

I used the Kingo app to root my S6 but the root was unsuccessful and returned an error 0x11550A9 or something similar. I tried a few more times but gave the same error so I stopped. I went ahead and restarted my phone but now it's stuck on the T-Mobile screen that comes after the splash screen. I can't even turn it off but only restart it and boot into download mode.