Look under C:\Users for the list of user IDs. If you're lucky, maybe one of the ones there will have what you want. If not, well I guess the school of hard knocks has shown you why you need to make system backups, unfortunately. I see you have no CD drive, but you can buy external USB ones for $25 and up.
When you've gotten your system back like you want it, I urge you to get yourself an external hard drive and a good 3rd party backup program. You can set it up to do everything automagically at the time and frequency of your choice. 1 TB external hard drives are about $60 these days and a really good FREE backup program is the Easeus Todo Backup Free. That can save you a lot of time and frustration the next time something like this happens. Sooner or later it happens to all computers for one reason or another.