• #0 Phillips screwdriver• #1 Phillips screwdriver• Small plastic scribe• Flash BIOS update program CDTurning Off Your ComputerCAUTION: To avoid losing data, save and close all open files and exit all openprograms before you turn off your computer.1. Shut down the operating system:• In Windows Vista :Click Start , then click the arrow in the lower-right corner of theStart menu as shown below, and then click Shut Down.• In Windows XP:Click Start → Turn Off Computer → Turn Off . The computer turns offafter the operating system shutdown process is complete.2. Ensure that the computer and all attached devices are turned off. If yourcomputer and attached devices did not automatically turn off when youshut down your operating system, press and hold the power button forabout 4 seconds to turn them off.After Working Inside Your ComputerAfter you complete any replacement procedure, ensure you connect anyexternal devices, cards, and cables before turning on your computer.CAUTION: To avoid damage to the computer, use only the battery designed for thisparticular Dell computer. Do not use batteries designed for other Dell computers.1. Connect any external devices, such as a port replicator, battery slice, ormedia base, and replace any cards, such as an ExpressCard.2. Connect any telephone or network cables to your computer.11