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Latitude 3480 Owner's Manual

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Real Time Clock (RTC) reset

The Real Time Clock (RTC) reset function allows you or your service technician to recover late model Dell Latitude and Precision systems from select No POST/No Boot/No Power situations.

You can initiate the RTC reset on the system from a power off state and is connected to AC power. Press and hold the power button for twenty-five (25) seconds. The system RTC Reset occurs after you release the power button.

NOTE:If AC power is removed from the system during the process or the power button is held longer than 40 seconds, the RTC Reset process is aborted.

Te RTC reset will reset the BIOS to Defaults, un-provision Intel vPro, and reset the system date and time.

The following items are not affected by the RTC reset:

  • Service Tag

  • Asset Tag

  • Ownership Tag

  • Admin Password

  • System Password

  • HDD Password

  • Key Databases

  • System Logs

These items may or may not reset based on your custom BIOS setting selections:

  • The Boot List

  • Enable Legacy OROMs

  • Secure Boot Enable

  • Allow BIOS Downgrade

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