Saving Errors

I had gotten rid of a virus recently and afterwards I've noticed in the Libraries folder, the separate folders like Pictures, Videos, and Documents are gone. I was able to locate "pictures" somewhere else on my pc, but I couldn't copy and paste that folder into Libraries also when I attempt to save anything under libraries I get a message telling me that I can't. I did find documents in the my recent places, but when I try to save there I get an error message. What can I do to fix this?