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Before You Begin
Dell™ Studio XPS™ 1640 Service Manual
Recommended Tools
Turning Off Your Computer
Before Working Inside Your Computer
This section provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that the following conditions exist:
•You have performed the steps in Turning Off Your Computer and Before Working Inside Your Computer.
•You have read the safety information that shipped with your computer.
•A component can be replaced
Recommended Tools
The procedures in this document may require the following tools:
•Small
•Phillips screwdriver
•Hex nut driver
•Processor extraction tool
•BIOS upgrade CD
Turning Off Your Computer
NOTICE: To avoid losing data, save and close all open files and exit all open programs before you turn off your computer.
1.Save and close all open files and exit all open programs.
2.In Microsoft® Windows Vista®, click Start 
, click the arrow 
, and then click Shut Down.
The computer turns off after the operating system shutdown process finishes.
3.Ensure that the computer and any attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your operating system, press and hold the power button for at least 8 to 10 seconds until the computer turns off.
Before Working Inside Your Computer
Use the following safety guidelines to help protect your computer from potential damage and to help to ensure your own personal safety.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer.
NOTICE: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by its edges. Hold a component such as a processor by its edges, not by its pins.
NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
NOTICE: When you disconnect a cable, pull on its connector or on its
NOTICE: To avoid damaging the computer, perform the following steps before you begin working inside the computer.
1.Ensure that the work surface is flat and clean to prevent the computer cover from being scratched.
2.Turn off your computer (see Turning Off Your Computer).
3.If the computer is connected to a docking device (docked), undock it. See the documentation that came with your docking device for instructions.