RECOVERING DWG FILE

my computer got infected and in repairing it had to back up my files, clean the hard drive and reload the files.
in the process some of my autocad dwg files have been corrupted/ damaged. when i do a search of my hard drive, these files show up but when i click to open them i get a message reading
:”the drive or network connection the shortcut ‘SITE.dwg.lnk’ refers to is unavailable …”
anyone knows how i can recover these dwg files

your comments and suggestions are appreciated