Windows Not Loading

So my Windows 7 freezes upon start up, and when I load it in safe mode it freezes at \windows\system32\drivers\CLASSPNP.SYS

My disc reader doesn't work so everything I am trying to do is off of a flash drive. I don't have a recovery CD and even if I did it wouldn't do me any good. I'd like to try and fix the system rather than nuke it and reinstall an os. ; ; Any suggestions before I dban it's face off? Also, I have tried booting windows 7 and 8.1 from a flash drive to replace current windows, but it won't load it first even with HDD set as first in the boot menu.