• Memory riser and fan cage• SD cards• USB memory key• NIC hardware key• Network Daughter Card riser (Riser 1)• Processor(s) and heat sink(s)4. 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.Steps1. Re-enter the time and date in System Setup.2. Turn off the system, and disconnect it from the electrical outlet for at least one hour.3. Reconnect the system to the electrical outlet, and turn on the system.4. Enter System Setup.If the date and time are not correct in System Setup, check the System Error Log (SEL) for systembattery messages.Next stepsIf the problem persists, see Getting Help.Troubleshooting power supply unitsPrerequisitesCAUTION: 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.153
