108 Installing System Components10 Using a #2 Phillips screwdriver, tighten the heat-sink retention screws.See Figure 3-18.11 Replace the cooling shroud. See "Installing the Cooling Shroud" onpage 67.12 Close the system. See "Closing the System" on page 65.13 Reconnect the system to its electrical outlet and turn the system on,including any attached peripherals.14 Press to enter the System Setup program, and check that the processorinformation matches the new system configuration. See "Entering theSystem Setup Program" on page 40.15 Run the system diagnostics to verify that the new processor operatescorrectly.See "Running the Embedded System Diagnostics" on page 148 forinformation about running the diagnostics.System BatteryReplacing the System BatteryWARNING: There is a danger of a new battery exploding if it is incorrectlyinstalled. Replace the battery only with the same or equivalent type recommendedby the manufacturer. See your safety information for additional info.CAUTION: Many repairs may only be done by a certified service technician.You should only perform troubleshooting and simple repairs as authorized inyour product documentation, or as directed by the online or telephone serviceand support team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions that camewith the product.1 Turn off the system, including any attached peripherals,and disconnect the system from the electrical outlet.2 Open the system. See "Opening the System" on page 64.3 Remove the cooling shroud. See "Removing the Cooling Shroud" onpage 66.