Ok so i messed up my desktop by downloading a really bad virus that created millions(maybe event billions) of empty folders on my C drive that was numbered. So i have a bootable flash drive that i used to reformat the desktop but i accidently turned off the power on the computer( i was watching tv and waiting for it to install and my bro shoots me with his nerf gun and startles me and i kicked the power button and it turned off) so when i turn it on i, it hangs on the first screen. I can press tab to go into bios and del to go into setup but when i do it gets stuck on the POST screen. If i wait and dont press del or tab and then press them, nothing happens. any help guys?