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If the battery light does not glow after 20 minutes, the battery may have reached the end of its useful life. Try replacing it. The battery appears not to power the computer for as long as it usually does. If you frequently recharge a partially charged battery, it may not charge fully. Let the battery discharge completely, then try charging it again. Check the power options using the Power Management utility. Have you added a device, such as a PC Card or memory module, that takes its power from the battery? Is your software using the hard disk more? Is the display set to turn off automatically? Was the battery fully charged to begin with? All these conditions affect how long the charge lasts. For more information on maximizing battery power, see “Charging batteries” on page 128. Keyboard problems If, when you type, strange things happen or nothing happens, the problem may be related to the keyboard itself. The keyboard produces unexpected characters. A keypad overlay may be on. If the numeric keypad or cursor control light is on, press Fn and F10 simultaneously to turn off the cursor control light or press Fn and F11 simultaneously to turn off the numeric keypad light. If the problem occurs when both the keypad overlays are off, make sure the software you are using is not remapping the keyboard. Refer to the software’s documentation and check that the program does not assign different meanings to any of the keys. If Something Goes Wrong If Something Goes Wrong Resolving a hardware conflict You have connected an external keyboard and the operating system displays one or more keyboard error messages. If you have a second keyboard, try it. If it works, the first keyboard may be defective or incompatible with your computer. Display problems Here are some typical display problems and their solutions: The display is blank. Display Auto Off may have gone into effect. Press any key to activate the screen. You may have activated the instant password feature by pressing Fn and F1 simultaneously. If you have registered a password, press the Enter key, type the password and press Enter. If no password is registered, press Enter. The screen reactivates and allows you to continue working. If you are using the built-in screen, make sure the display priority is not set for an external monitor. To do this, press Fn and F5 simultaneously (once). If this does not correct the problem, press Fn and F5 simultaneously again to return the display priority to its previous setting. If you are using an external monitor: . Check that the monitor is turned on. . Check that the monitor’s power cable is firmly plugged into a working power outlet. . Check that the cable connecting the external monitor to the computer is firmly attached. . Try adjusting the contrast and brightness controls on the external monitor. . Press Fn and F5 simultaneously to make sure the display priority is not set for the built-...

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