How do you retrieve encryption password or set new password for Netgear wireless router?

Have you tried the reset button on the back?

Type your default IP into your URL hit enter type in your login and passWord. If you haven't already set those you will be prompted to enter a login and passWord-they are always generic like:-login/login, or login/passWord. Aquick google search of your specific type of router will give you the best results.