Hi there! My name is***** am a computer professional with over 15 years of experience with both Mac and Windows computers, phones, tablets, and printers. It would be my pleasure to assist you with this.
The username is ***** ***** address associated with the Nook. If you have forgotten the password, please click on this link http://www.barnesandnoble.com, then click on Sign In (top left area of web page), then on the next page, click on the link that says "FORGOT PASSWORD". On the PASSWORD ***** box that pops up, please type in your email address and click continue. You will be sent an email with instructions for resetting your password.
Please give this a try and let me know the results.