Troubleshooting your system 1159Troubleshooting your systemSafetyfirst— foryouandyoursystemCAUTION: Manyrepairsmay onlybedonebyacertifiedservicetechnician. You shouldonlyperformtroubleshooting andsimplerepairsasauthorizedinyourproductdocumentation, orasdirectedbytheonlineortelephoneserviceandsupportteam.Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthatareshippedwithyourproduct.NOTE: Solution validation was performed by using the factory shipped hardware configuration.Topics:• Troubleshooting system memory• Troubleshooting Solid StateDrives• Troubleshooting USBdevices• Troubleshooting an internal SD card• Troubleshootingprocessors• Troubleshooting the system board• Troubleshooting the NVRAM backup batteryTroubleshooting system memoryPrerequisitesCAUTION:Manyrepairsmayonlybedonebyacertifiedservicetechnician.Youshouldonlyperformtroubleshootingandsimplerepairs as authorized in your product documentation, or as directed by the online or telephone service and support team.Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthatareshippedwithyourproduct.NOTE: Beforeperformingthefollowingprocedure, ensurethatyou haveinstalledthememorymodulesaccordingtothememoryinstallation guidelines for the sled.Steps1 Restartthesled:a Press the power button once to turn off the sled.b Press the power button again to turn on the sled.If no error messages appear, go to step 7.2 Enter System Setup and check the system memorysetting.If the amount of memory installed matches the system memory setting, go to step 7.3 Turn off the sled using the operating system commands or the CMC.4 Removethesledfromtheenclosure.CAUTION: The memory modules are hot to touch for some time after the sled has been powered down. Allow time for thememory modules to cool before handling them. Handle the memory modules by the card edges and avoid touching thecomponents.5 Reseat the memory modules in their sockets.
