Well, since it's listed in the "recent" tab, it's just history. It doesn't
mean that the file still exist in the system.
Have you checked the file presence from command prompt? e.g.: via DIR
command:
DIR /A "C:\Some Folder\FEDFCFAAA_S.DLL"
If you found it, then the file is just hidden using the HIDDEN file
attribute.
Otherwise, you can use a deleted-file recovery program to scan the
files/folders in a drive and check the presence of that DLL file.
Deleted-file recovery programs don't use standard file access functions
which are usually hacked by rootkit viruses to hide files/folders, so the
programs have a higher chance of finding files/folder hidden by viruses.
When you use the recovery program, make sure it can also show files that
aren't deleted (also check its settings). One freeware program that can do
this is Recuva at:
http://www.piriform.com/recuva
But Recuva doesn't have indicators for deleted and non-deleted files, so you
won't know the exact status. If you found the file and it'snot deleted, it
means that your system is infected by a rootkit virus. If so, get
malware/virus cleaners and scan your system.
Another method is to boot using LiveCD to check the DLL file presence. If
it's absent, then it's actually deleted.