nvstartup is a process which belongs to NVIDIA based graphics cards and adds additional functionality for this range of graphics products. "This program is a non-essential process, but should not be terminated unless suspected to be causing problems. "
Non-system processes like nvstartup 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