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Dell Precision 5520 Owner's Manual

PDF

Clearing CMOS settings

About this task

CAUTION Clearing CMOS settings resets the BIOS settings on your computer.

Steps

  1. Remove the base cover.
  2. Disconnect the battery cable from the system board.
  3. Remove the coin-cell battery.
  4. Wait for one minute.
  5. Replace the coin-cell battery.
  6. Connect the battery cable to the system board.
  7. Replace the base cover.

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