User manual HP G62-A60SA

[. . . ] The information contained herein is subject to change without notice. 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. HP shall not be liable for technical or editorial errors or omissions contained herein. [. . . ] If provided with a 3-pin attachment plug on the power cord, plug the cord into a grounded (earthed) 3pin outlet. Do not disable the power cord grounding pin, for example, by attaching a 2-pin adapter. The grounding pin is an important safety feature. To connect the computer to external AC power: 1. Plug the AC adapter into the power connector (1) on the computer. Plug the power cord into the AC adapter (2). Plug the other end of the power cord into an AC outlet (3). Using external AC power 51 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 does not turn on. The power light is off. To test the AC adapter: 1. Shut down the computer and close the display. Turn the computer upside down on a flat surface. Slide the battery release latch (1) to release the battery. Do not charge the computer battery while you are onboard aircraft. The battery charges whenever the computer is plugged into external power through an AC adapter, an optional power adapter, or an optional expansion product. The battery charges whether the computer is off or in use, but it charges faster when the computer is off. Charging may take longer if a battery is new, has been unused for two weeks or more, or is much warmer or cooler than room temperature. To prolong battery life and optimize the accuracy of battery charge displays, follow these recommendations: If you are charging a new battery, charge it fully before turning on the computer. Charge the battery until the AC adapter light turns off. NOTE: If the computer is on while the battery is charging, the battery meter in the notification area may show 100 percent charge before the battery is fully charged. Allow the battery to discharge below 5 percent of a full charge through normal use before charging it. If the battery has been unused for one month or more, calibrate the battery instead of simply charging it. The AC adapter light displays charge status: On: The battery is charging. Blinking: The battery has reached a low battery level or critical battery level and is not charging. Off: The battery is fully charged, in use, or not installed. Using battery power 55 Maximizing battery discharge time Battery discharge time varies depending on the features you use while on battery power. [. . . ] Under Protection Settings, select the disk for which you want to create a restore point. Follow the on-screen instructions. 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, follow these steps: 1. Select Start > Control Panel > System and Security > System. In the left pane, click System protection. [. . . ]