User manual HP COMPAQ PRESARIO C300EU

[. . . ] Notebook PC User Guide © Copyright 2006 Hewlett-Packard Development Company, L. P. registered trademarks of Microsoft Corporation. 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. [. . . ] If the battery pack fails, hibernation saves your work to a hibernation file and shuts down the computer. It is recommended that if you pause your work when the power supply is uncertain, you take one of the following actions: Save your work, and then initiate standby. Shut down the computer. 32 Chapter 3 Power ENWW When using wireless communication or readable or writable media (select models only) CAUTION To prevent possible audio and video degradation, or loss of audio or video playback functionality, do not initiate standby or hibernation while reading or writing to a CD, DVD, or external media card. To prevent loss of information, do not initiate standby or hibernation while writing to a CD, DVD, or external media card. Standby and hibernation interfere with the use media. If standby or hibernation is accidentally initiated during playback of a medium such as a CD, DVD, or external media card Your playback may be interrupted. You may see the following warning message: "Putting the computer into hibernation or standby may stop the playback. Do you want to continue?" Click No. You may need to restart the media to resume audio and video playback. ENWW Standby and hibernation 33 Default power settings This section explains the default standby, hibernation, and shutdown procedures. For information about changing the function of the power features on the computer, refer to "Power options. " The controls and lights discussed in this section are illustrated in "Power control and light locations. " Turning the computer or display on or off Task Turn on the computer. Save your work and close all open applications. Shut down the computer through the operating system by selecting Start > Turn Off Computer > Turn Off. NOTE If the system is unresponsive and you are unable to shut down the computer with these procedures, refer to "Using emergency shutdown procedures. " Turn off the display while the power is on. Closing the computer activates the display switch, which initiates standby. The computer is turned off. 2. Using emergency shutdown procedures CAUTION Emergency shutdown procedures result in the loss of unsaved information. If the computer is unresponsive and you are unable to use normal Windows shutdown procedures, try the following emergency procedures in the sequence provided: Press ctrl+alt+delete. Press and hold the power button for at least 5 seconds. Disconnect the computer from external power and remove the battery pack. 34 Chapter 3 Power ENWW Initiating or resuming from standby Task Initiate standby. Procedure With the computer on, press the hotkey to initiate standby. Select Start > Turn Off Computer > Stand by. In Windows XP Professional, if Stand by is not displayed: a. The screen clears. Close the computer. [. . . ] The memory capacity of the computer can be upgraded by adding a memory module to the vacant expansion memory module slot or by upgrading the existing memory module in the primary memory module slot. To reduce the risk of electric shock and damage to the equipment, unplug the power cord and remove all battery packs before installing a memory module. CAUTION Electrostatic discharge (ESD) can damage electronic components. Before beginning any procedure, ensure that you are discharged of static electricity by touching a grounded metal object. [. . . ]