fjssdmn.exe is a FJSSDMN
belonging to Fujitsu Shock Sensor
from FUJITSU LIMITED
Non-system processes like fjssdmn.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.