sav539wu.dll is a SAV539W.DLL
belonging to SAVIN C3224 PCL 5c
from RICOH COMPANY,LTD.
Non-system processes like sav539wu.dll originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues