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Before You Begin
Dell Studio™ 1555 Service Manual
Recommended Tools
Turning Off Your Computer
Before Working Inside Your Computer
This document provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that:
•You have performed the steps in Before Working Inside Your Computer.
•You have read the safety information that shipped with your computer.
•When replacing a component, you have already removed the original component, if installed.
Recommended Tools
The procedures in this document may require the following tools:
•Small
•Phillips screwdriver
•Small plastic scribe
•BIOS upgrade CD (see the Dell Support website at support.dell.com)
Turning Off Your Computer
CAUTION: 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 ensure your own personal safety.
WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.
CAUTION: 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.
CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface, such as a connector on the back of the computer.
CAUTION: 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.
CAUTION: When disconnecting a cable, pull on the cable's connector or on its
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).