• memory modules• hard drive carriers/cage• 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 the Using system diagnostics section.Next stepsIf the problem persists, see the Getting help section.Related LinksGetting helpUsing system diagnosticsTroubleshooting 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 are shipped with your 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 an hour.3. Reconnect the system to the electrical outlet, and turn on the system.4. Enter System Setup.If the date and time displayed in System Setup are not correct, check the System Error Log (SEL) forsystem battery messages.Next stepsIf the problem persists, see the Getting help section.Related LinksGetting helpTroubleshooting power supply unitsCAUTION: 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 are shipped with your product.116
