unable to checkout files in git directory -

i'm starting use git, , i'm having files , folders being modified , unable reset or checked out. have tried command they're still stuck unstaged changes! here config file:

[core]         repositoryformatversion = 0         filemode = false         bare = false         logallrefupdates = true         ignorecase = true         precomposeunicode = true         autocrlf = false         safecrlf = false         eol = crlf 

i have tried checkout each file , reset hard, going on here?

thanks

do have .gitignore file somewhere in repository files? if file contains path/filename of file(s) want add, not succeed, because ignored.