94 Barnes & Noble NOOK User GuideTips and TroubleshootingSolving ProblemsMy NOOK is sluggish or unresponsive.Like any computer or electronic equipment, your NOOK periodical needs to be completely powered-off (not justput in sleep mode) to allow it to reset.To power off your NOOK, press and hold the power button for 20 seconds. At that point, the device should beturned-off. Wait a few seconds, and then press and hold the power button for about 2 seconds to turn your NOOKback on.I want to change my BN.com account password. What should I do?Before you change your password on BN.com, first deregister your NOOK, so your NOOK isn’t configured to use apassword that you have made obsolete.NOTE: You must be connected to a Wi-Fi network to de-register your NOOK.NOTE: De-registering your device will delete any content you have side-loaded on your NOOK. You mightwant to make sure you have copies of this content on your personal computer. You do not need toback up the books, magazines, and newspapers you have purchased through the NOOK Store. Theseitems will be restored to your NOOK automatically when you re-register it, using your new password.Deregistering Your NOOKTo deregister your NOOK, do this:1. Tap gear icon in the Status Bar to open the Quick Settings window.2. Tap the All Settings button.3. Tap Device Info.4. Tap the Erase & Deregister Device menu choice.5. On the Erase & Deregister Device screen, tap the Erase & Deregister Device button.A dialog box appears, asking you to confirm that you want to reset your NOOK.6. Tap the Reset NOOK button.Your NOOK deregisters itself, restoring factory default settings.Changing Your PasswordOnce you have deregistered your NOOK, log in to BN.com and change your password.Reregistering Your NOOKOnce you have changed your password on BN.com, register your NOOK, following the registration instructions youfollowed when you first set up your NOOK. See “Registering Your NOOK” at the beginning of this guide.When you need to enter your BN.com account login information, be sure to enter your new password.