134 Troubleshooting Your SystemTroubleshooting a Damaged SystemCAUTION: 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 and attached peripherals, and disconnect the systemfrom the electrical outlet.2 Open the system. See "Opening the System" on page 64.3 Ensure that the following components are properly installed:• Expansion-card riser• Power supplies• Fans• Processors and heat sinks• Memory modules• Hard-drive carriers• Cooling shroud4 Ensure that all cables are properly connected.5 Close the system. See "Closing the System" on page 65.6 Run the system board tests in the system diagnostics. See "Running theSystem Diagnostics" on page 147.If the tests fail, see "Getting Help" on page 157.Troubleshooting the System BatteryNOTE: If the system is turned off for long periods of time (for weeks or months),the NVRAM may lose its system configuration information. This situation iscaused by a defective battery.1 Re-enter the time and date through the System Setup program.See "System Setup Options" on page 41.2 Turn off the system and disconnect it from the electrical outlet for atleast one hour.
