Read nwiz.exe - nwiz - Process Information
To remove it from Startup go to > Start > Run > type in "MSCONFIG" w/o the quotes and click OK. Then click on the "Startup" > remove the check mark beside nwiz.exe > Click Apply > OK. When Asked if you want to restart the computer click No.
Go to Start > Control Panel > Administrative Tools > click on "Services". Then scroll down to nwiz.exe or nwiz (if it exists). Double click on it and set the startup type to "Disable". Then click on Apply > the Start button > OK.
Restart the computer.
Hope this is helpful.
Do I really need NWIZ.exe running at startup?
If not, how do I prevent it from placing an icon in the tray????