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 unit(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.Next stepsIf the tests fail, see Getting Help.Troubleshooting the system batteryPrerequisitesCAUTION: 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.NOTE: If the system is turned off for long periods of time (for weeks or months), the NVRAM maylose its system configuration information. This situation is caused by a defective battery.NOTE: Some software may cause the system time to speed up or slow down. If the system seemsto operate normally except for the time set in System Setup, the problem may be caused by asoftware, rather than by a defective battery.137
