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OptiPlex 7070 Tower Service Manual

PDF

Clearing CMOS settings

CAUTION Clearing CMOS settings will reset the BIOS settings on your computer.
  1. Remove the front bezel.
  2. Open the front panel door.
  3. Remove the coin-cell battery.
  4. Wait for one minute.
  5. Replace the coin-cell battery.
  6. Close the front panel door.
  7. Replace the front bezel.
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