User manual HP PAVILION DV6-3142EA

[. . . ] Notebook PC User Guide © Copyright 2010 Hewlett-Packard Development Company, L. P. Bluetooth is a trademark owned by its proprietor and used by Hewlett-Packard Company under license. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. [. . . ] Resolving a low battery level when external power is available To resolve a low battery level when external power is available, connect one of the following devices: AC adapter Optional expansion product or docking device Optional power adapter Resolving a low battery level when a charged battery is available To resolve a low battery level when a charged battery is available: 1. Turn on the computer. Resolving a low battery level when no power source is available To resolve a low battery level when no power source is available, initiate Hibernation, or save your work and then shut down the computer. Resolving a low battery level when the computer cannot exit Hibernation To resolve a low battery level when the computer cannot exit Hibernation: 1. Press the Power button to exit Hibernation. Using battery power 51 Calibrating a battery Calibrate the battery when: The battery charge displays seem inaccurate. You observe a significant change in battery run time. A heavily used battery should only be calibrated once a month. NOTE: The battery charges while the computer is off or in use, but it charges faster when the computer is off. Connect the computer to an AC adapter, optional power adapter, optional expansion product, or optional docking device, and then connect the adapter or device to an external power source. Leave the computer connected to external power until the battery is fully charged. c. Click the Battery Meter icon in the notification area, and then click More power options. ­ or ­ Select Start > Control Panel > System and Security > Power Options. Record the Turn off the display settings listed in the On battery column so they can be reset after the calibration. Click the plus sign next to Sleep, and then click the plus sign next to Hibernate after. Record the On battery setting under Hibernate after so it can be reset after the calibration. Disconnect the computer from the external power source, but do not shut down the computer. Run the computer on battery power until the battery is discharged. 52 Chapter 6 Power management The computer must remain on while the battery is being discharged. The battery discharges whether or not you are using the computer, but the battery discharges faster while you are using it. If you plan to leave the computer unattended during the discharge, save your information before beginning the discharge procedure. If you use the computer occasionally during the discharge procedure and have set energysaving timeouts, expect the following performance from the system during the discharge process: 4. The hard drive speed does not decrease automatically when the computer is idle. Connect the computer to external power until the battery is fully recharged. The computer can be used while the battery is recharging, but the battery charges faster if the computer is off. If the computer is off, turn it on when the battery is fully charged. 5. Re-enable Hibernation and Sleep. [. . . ] Create additional restore points to provide increased protection for the system files and settings. When to create restore points Create restore points: Before adding or extensively modifying software or hardware Periodically, whenever the system is performing optimally If you revert to a restore point and then change your mind, reverse the restoration. NOTE: Create a system restore point To create a system restore point: 1. Under Protection Settings, select the disk for which you want to create a restore point. Follow the on-screen instructions. 112 Appendix C Backup and recovery Restore to a previous date and time To revert to a restore point (created at a previous date and time), when the computer was functioning optimally: 1. Follow the on-screen instructions. Performing a recovery NOTE: You can recover only files that you have previously backed up. [. . . ]