prismsvc.exe is a PRISM Server Service Module
from Conexant Systems, Inc.
belonging to PRISM Wireless LAN
Non-system processes like prismsvc.exe 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