Hi everyone. One day when I was booting up my computer this error or system failure happen. I’m clueless to how this happen. None of the safe mode are working and I can’t think of anything else. PLEASE HELP :‘( :’( 
https://forum.avast.com/index.php?topic=53253.0
Scroll down to “If you cannot Boot the computer” and follow the instructions.
Can I use an usb for the entire process?
Sure, use Rufus
https://rufus.akeo.ie/