HP 15-1050NR Testing an AC adapter, (3), off

3.Plug the other end of the power cord into an AC outlet (3).

Testing an AC adapter

Test the AC adapter if the computer exhibits any of the following symptoms when it is connected to AC power:

●The computer will not turn on.

●The display does not turn on.

●The power light is off.

To test the AC adapter:

1.Remove the battery from the computer.

2.Connect the AC adapter to the computer, and then plug it into an AC outlet.

3.Turn on the computer.

●If the power light turns on, the AC adapter is working properly.

●If the power light remains off, the AC adapter is not functioning and should be replaced. Contact technical support for information on obtaining a replacement AC power adapter.

48 Chapter 6 Power management

Contents

Page Page Safety warning notice Page Table of contents 4 Pointing devices and keyboard 5 Multimedia 6 Power management 7 Drives and external devices 8 Memory modules 9 Security Appendix A Setup Utility (BIOS) Appendix B Backup and recovery Appendix C RAID 0 (select models only) Page 1 Notebook tour Identifying hardware Components Top components TouchPad TouchPad buttons Lights Button Keys Front components Right-sidecomponents Left-sidecomponents Bottom components Display components Wireless antennas Additional hardware components Labels 2Using Instant On Software (select models only) 3 Wireless and local area network Using wireless devices Identifying wireless and network status icons Using the wireless controls Using the wireless key Using Wireless Assistant software Using operating system controls Using a WLAN Setting up a WLAN Protecting your WLAN Connecting to a WLAN Roaming to another network Using Bluetooth wireless devices Bluetooth and Internet Connection Sharing (ICS) Troubleshooting wireless connection problems Cannot connect to a preferred network Network icon for WLAN is not displayed Current WLAN network security codes are unavailable WLAN connection is very weak Cannot connect to the wireless router Connecting to a local area network (LAN) 4 Pointing devices and keyboard Using pointing devices Setting pointing device preferences Using the TouchPad Using TouchPad gestures Scrolling Pinching Rotating Page Using the action keys Page Using the hotkeys Cleaning the TouchPad and keyboard 5 Multimedia Multimedia features Adjusting the volume Using the media activity keys Multimedia software Using HP MediaSmart software Using multimedia software Installing multimedia software from a disc Audio Connecting external audio devices Checking your audio functions Using Beats Audio Video Connecting an external monitor or projector Connecting an HDMI device Configuring audio for HDMI Webcam Webcam tips Adjusting webcam properties Gamma Backlight Comp Using the ambient light sensor Using adaptive brightness Using the webcam IR light Low Light Compensation 6 Power management Setting power devices Using power-savingstates Initiating and exiting Sleep Initiating and exiting Hibernation Conserving power Using the battery meter Using power plans Viewing the current power plan Selecting a different power plan Customizing power plans Setting password protection on wakeup Using external AC power Connecting AC power Testing an AC adapter Using battery power Identifying batteries Finding battery information in Help and Support Using Battery Check Displaying the remaining battery charge Removing or inserting the primary battery Charging a battery Maximizing battery discharge time Managing low battery levels Identifying low battery levels Resolving a low battery level Using the accessory battery (select models only) Identifying the accessory battery components Inserting or removing an accessory battery Page Battery charging and discharging sequence Calibrating a battery Storing a battery Disposing of a used battery Replacing the battery Shutting down the computer 7 Drives and external devices Drives Identifying installed drives Handling drives Improving hard drive performance Using Disk Defragmenter Using Disk Cleanup Using HP ProtectSmart Hard Drive Protection (select models only) Identifying HP ProtectSmart Hard Drive Protection status Managing power with a parked hard drive Using HP ProtectSmart Hard Drive Protection software Using external drives Connecting optional external drives Using the external optical drive (select models only) Removing an optical disc when the disc tray will not open Sharing optical drives Start > Control Panel > Network and Sharing Center > View computers and devices External devices Using a USB device Connecting a USB device Removing a USB device Using an eSATA device Connecting an eSATA device Removing an eSATA device Using Digital Media Slot cards Inserting a digital card Removing a digital card 8 Memory modules Page Page Page Page 9 Security Protecting the computer Using passwords Setting passwords in Windows Setting passwords in Setup Utility Administrator password Power-onpassword Managing a power-onpassword Security > Set Power-On Password Entering a power-onpassword Using antivirus software Using firewall software Installing critical security updates Installing an optional security cable A Setup Utility (BIOS) Starting Setup Utility Using Setup Utility Changing the language of Setup Utility Navigating and selecting in Setup Utility Displaying system information Restoring default settings in Setup Utility Exiting Setup Utility Setup Utility menus Main menu Security menu System Configuration menu Diagnostics menu Updating the BIOS Updating the BIOS Determining the BIOS version Downloading a BIOS update Start > Help and Support > Maintain B Backup and recovery Creating recovery discs Backing up your information Using Windows Backup and Restore Using system restore points When to create restore points Create a system restore point Restore to a previous date and time Performing a recovery Recovering from the recovery discs Recovering from the dedicated recovery partition (select models only) C RAID 0 (select models only) Disabling RAID Index