Where to download image files for reinstalling a system on a computer without an optical drive?

http://www.wzlu.cc/soft/18/

This site is too much system to download, no optical drive to install the system to see if your original system is not broken, not broken, then go directly to the top of the next system down, and then unzipped to the area outside of the C disk, open the folder, generally there is a GHO image installer. EXE

file, run it and reboot, then the system will be automatically installed. If the system is broken that's a bit of a problem, the first thing you need to do is to make a U disk boot disk, use the boot disk to enter the DOS or PE, you can install the system, but this method is a bit of a hassle, not a professional or do not, simply plug directly into a CD-ROM drive to fast.