Introduction

The CMOS battery maintains the computer's startup settings as well as its internal clock. If your computer notifies you about changing this battery, it is best to do so immediately.

Ensure your computer is shut down.
  • Ensure your computer is shut down.

  • Removing the battery while the laptop is still on may corrupt your files.

  • Remove any power adapters and cords connected to the laptop body.

  • Turn the computer over so the bottom is facing up.

  • These pictures show no battery, but your battery should still be in your computer at this point.

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The battery release is below the bottom right corner of the battery bay.
  • The battery release is below the bottom right corner of the battery bay.

  • Slide the switch to the right until the release clicks.

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Remove the battery.
  • Remove the battery.

  • The release switch may need to be held down while removing the battery.

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Remove these two 4mm Phillips screws on the back panel using a Phillips #00 screwdriver and remove the cover to reveal the CMOS battery Remove these two 4mm Phillips screws on the back panel using a Phillips #00 screwdriver and remove the cover to reveal the CMOS battery
  • Remove these two 4mm Phillips screws on the back panel using a Phillips #00 screwdriver and remove the cover to reveal the CMOS battery

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Locate the CR2032 watch battery Using a 2.5mm flathead screwdriver, carefully pry up the battery using the tab to the right of the battery
  • Locate the CR2032 watch battery

  • Using a 2.5mm flathead screwdriver, carefully pry up the battery using the tab to the right of the battery

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The CMOS battery is now removed from your system.
  • The CMOS battery is now removed from your system.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

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Cory Mayer

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Cal Poly, Team 9-15, Regan Spring 2014 Member of Cal Poly, Team 9-15, Regan Spring 2014

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