158 Troubleshooting Your System• Memory modules• Hard-drive carriers4 Ensure that all cables are properly connected.5 Close the system. See "Closing the System."6 Run the system board tests in the system diagnostics. See "Running theSystem Diagnostics."If the tests fail, see "Getting Help."Troubleshooting the System Battery1 Re-enter the time and date through the System Setup program. See "Usingthe System Setup Program and UEFI Boot Manager."2 Turn off the system and disconnect it from the electrical outlet for at leastone hour.3 Reconnect the system to the electrical outlet and turn on the system.4 Enter the System Setup program.If the date and time are not correct in the System Setup program, replacethe battery. See "System Battery."CAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is not coveredby your warranty. Read and follow the safety instructions that came with theproduct.If the problem is not resolved by replacing the battery, see "Getting Help."Troubleshooting Power SuppliesCAUTION: At least one power supply must be installed for the system to operate.Operating the system with only one power supply installed for extended periods oftime without a power-supply blank installed in the PS2 power-supply bay cancause the system to overheat.1 Identify the faulty power supply by the power supply's status indicator. See"Power Indicator Codes."
