In Desperate Need of Help

Okay. I'm having a f***ing awful day. Long story short I got my phone stuck in a reboot loop. And I also deleted the OS. I cannot install the drivers for my phone on my computer in order to install a new ROM or Lollipop. I have no back ups. Using the recovery menu to factory reset my phone didn't help the situation at all either. I'm panicking and quite frankly extremely angry. I don't know what there's left for me to do. If it matters my phone is an S5 running (until I deleted it accidentally) Android 5.0. Model Number is SM900W8. Also KNOX was triggered so I don't think I can take it in. Someone please help me if at all possible. Also I have no idea how this happened in the first place :/