What is it?
NVIDIA nView Wizard - nwiz.exe

What does nwiz.exe do?
This is a multi desktop application used by NVIDIA. I pulled a quote from here:
NVIDIA® nView™ multi-display software--bundled free with NVIDIA® ForceWare™ desktop, workstation, mobile, platform, and multimedia software solutions--provides a revolutionary way to multi-task and process information easier. Instead of stacking window upon window within the confines of a single display, imagine spreading your work across multiple displays. Financial analysts can have a monitor for tracking each data stream. Graphic artists can use an entire display for palettes, and another for editing. The possibilities are endless.

If you're using a multi desktop environment then most likely you won't want to touch this process.