#clean install

Is there a way to do a clean install of windows through BIOS because all the youtube tutorials do it by using a media creation thing. When i plug my usb flash drive in, it says i have to format it but ive been told to not format it. What do i do? im not experienced with computers and just want...

So pretty much i got a brand new pc last december right, It's an acer nitro 50 desktop pc. Recently i decided to do a clean install from the acer software that pretty much keeps all the standard apps that were preinstalled when you first booted it up. It took me a few days to notice that my...