You can uninstall and reinstall NVDA, making sure to make the selection to enable it during the installation process.
You can also edit the NVDA desktop shortcut manually to add CTRL + ALT + N as the keyboard shortcut for same. The Shortcut tab is what opens by default when you open the properties for a desktop shortcut. The Shortcut Key edit box is where you'd set up CTRL + ALT + N.
Brian - Windows 10, 64-Bit, Version 21H1, Build 19043
I do not understand why some seek to separate a person from their actions. The self is composed of an individual’s thoughts, actions, and expression, which are contained in and actuated by the body. What you do and say is the clearest indicator of who you are.
~ Brian Vogel