To block Windows Access, first click the “Settings” icon from the Nova login screen. Next, click the “Disable UAC” icon to temporarily disable User Account Control and allow Windows to be blocked. Now, locate any anti-virus software installed on the computer and temporarily disable it in order to continue with blocking Windows access. Lastly, click the “Settings” icon from the Nova login screen again, and select the “Block Windows Access” icon. Windows will now be blocked (don’t forget to grant internet permissions for allowed websites by clicking the “Internet” icon from the sales screen). To un-block Windows Access, simply click Read more