The video card is a hardware component of the computer system that is responsible for the processing of visual related displays via the computing power provided by the graphics processing unit. The process nwiz.exe is one of the support components for the graphic card and is associated with the video device driver including the program responsible for controlling the device’s behavior.

The nwiz.exe process is directly associated with the NVIDIA nView Wizard used for the configuration of the NVIDIA nView Control Panel, which is intended to maximize the capabilities of video display adapters using the NVIDIA engine. The NVIDIA nView Wizard, supported by the nwiz.exe process, can be seen in relatively newer versions of the NVIDIA graphic cards released from 2002 onwards and normally packaged with the device driver installation disc.
Non-system processes like nwiz.exe originate from software you installed on your system. Since most applications store data on your hard disk and in your system's registry, it is likely that your computer has suffered fragmentation and accumulated invalid entries which can affect your PC's performance.

In Windows Task Manager, you can see what CPU, memory, disk and network utilization is causing the NVIDIA nView Wizard process. To access the Task Manager, hold down the Ctrl + Shift + Esc keys at the same time. These three buttons are located on the far left of your keyboard.

This process is considered safe. It is unlikely to pose any harm to your system. The nwiz.exe file should be located in the folder C:\Windows\System32. Otherwise it could be a Trojan.

This process is not considered CPU intensive. However, running too many processes on your system may affect your PC’s performance. To reduce system overload, you can use the Microsoft System Configuration Utility (MSConfig) or the Windows Task Manager to manually find and disable processes that launch upon start-up.

Use the Windows Resource Monitor to find out which processes and applications write/read the most on the hard drive, send the most data to the Internet, or use the most memory. To access the Resource Monitor, press the key combination Windows key + R and then enter 'resmon'.