You mean you deleted the files on your desktop. Your title reminds me of My computer broked down after perl install. Also, passwords.txt, plain text? No backups? What year is this?. Why you left anything important on your desktop is beyond me, then again, we briefly touched on your unconventional workflow previously.

Update: See PhotoRec, there are Linux distros (bootable from removable media) which have lots of digital forensics and file recovery tools. N.B. for best results stop using the computer impacted immediately, to maximise recovery efforts, stop writing to disk...