ndstray.exe is the traybar process from the ConfigFree Traybar utility on TOSHIBA laptops. It allows you switch between network devices by clicking on the traybar icon.
It is a safe process and is essential for the stable running of the laptop in question so removing is not recommended.
Non-system processes like ndstray.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that over time your registry suffers fragmentation and accumulates invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues