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Maintenance
& Service Guide MSG Index | Home
Page | Notice | Preface | Product
Description | Troubleshooting Power Management for Windows 98 The following power management features are available for conserving AC power and extending battery operating time: Power Management SettingsDepending on your patterns of computer use, you can set different levels of power management. These different power management levels can be activated based on the amount of time passed since the last system activity. System activity examples include keyboard or mouse movement, CD or DVD playback (while under program control that monitors Sleep), and modem use. Each of the following system components can be made to go to sleep after periods of inactivity:
You can select different conditions or power schemes through Power Management.The optional settings are Home/Office Desk, Portable/ Laptop, and Always On. From the default settings, you can change the delay time settings. Note: the setting for hard drive must be less than or equal to the setting for System.
There are five categories of power management settings under the Control Panel. The default setting for each feature is listed below in the tables.
SleepYou can select Sleep mode instead of turning off the computer when you have finished using it. This allows the computer to wake up faster than turning it completely off and saves power over the active (On) mode. Compaq Presario Notebook computers have two levels of sleep, Hibernation and Sleep. Hibernation - by pushing the power button once your computer will perform a save to disk followed by a shut down of the computer into Off mode. Sleep - is a low power mode, also referred to as Standby mode. While in Sleep mode, your computer will maintain system information and open files. Unsaved information will be lost if you turn off your system prior to system wake-up, or if you lose power while using the AC adapter.
Hibernation ModeHibernation helps conserve battery life and protects your data. Hibernation can be a routine power saving event, or can be the result of a low battery condition. As it enters Hibernation your computer will display a progress screen, as it automatically saves the machine state before it shuts down and turns itself off. Your computer will automatically go into Hibernation, when the battery has little power left, or when the system (operating on battery power) has been in Sleep mode for more than an hour. You can also manually initiate Hibernation by pressing the power button once while the system is active. To restore the computer's previous state, simply press the power button once again. While waking up, the computer will display a progress screen. The following table shows the conditions and indicators for getting in and out of the various power management modes, Sleep, Hibernation, and Off.
Servicing Your Computer - Full Off Mode If you need to install or replace components in your system, you must turn the computer off completely. Follow the instructions above for properly putting the computer into Off mode, unplug from the outlet, and remove the battery (see battery section for instructions on removing battery).
Rebooting After a LockupOccasionally you may encounter a frozen keyboard or a locked screen. To reboot your computer (as if from a cold start) slide and hold down the Power Switch for at least four seconds, which will cause a manual shutdown. Then, restart it with a single slide of the Power Switch. If it still doesn't recover, slide the Power Switch and hold it for four seconds to shut it down, then, remove the battery or unplug the AC power for at least 30 seconds. Reinsert the battery or reconnect AC power and slide the Power Switch once to reboot.
Battery Operating TimeBattery operating time is affected by variables, such as the following:
For more information on increasing battery pack operating time, conditioning the battery pack, and disposing of a used battery pack, refer to the Battery Pack Operations.
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