• power supply unit(s)• cooling-fan assembly (if present)• cooling fans• processor(s) and heat sink(s)• memory modules4. Let the system dry thoroughly for at least 24 hours.5. Reinstall the components you removed in step 3.6. Install the system cover.7. Turn on the system and attached peripherals.If the system does not start properly, see Getting Help.8. If the system starts properly, shut down the system, and reinstall all the expansion cards that youremoved.9. Run the appropriate diagnostic test. For more information, see Using System Diagnostics.Next stepsIf the tests fail, see Getting Help.Troubleshooting a damaged systemPrerequisitesCAUTION: Many repairs may only be done by a certified service technician. You should onlyperform troubleshooting and simple repairs as authorized in your product documentation, or asdirected by the online or telephone service and support team. Damage due to servicing that isnot authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthat came with the product.Steps1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.2. Remove the system cover.3. Ensure that the following components are properly installed:• Cooling shroud• Expansion-card risers (if present)• Expansion cards• Power supply(s)• Cooling-fan assembly (if present)• Cooling fans• Processor(s) and heat sink(s)• Memory modules• Hard-drive carriers• Hard-drive backplane4. Ensure that all cables are properly connected.5. Install the system cover.6. Run the appropriate diagnostic test. For more information, see Using System Diagnostics.156
