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  1. Turn off the computer. Before each operation it is important to start with the removal of the accumulator. Take the slide unlocked into position, remove the battery.
    • Turn off the computer.

    • Before each operation it is important to start with the removal of the accumulator.

    • Take the slide unlocked into position, remove the battery.

  2. Using the screwdriver Philips # 1, unscrew the 5 fixing screws of the cover. Using the screwdriver Philips # 1, unscrew the 5 fixing screws of the cover.
    • Using the screwdriver Philips # 1, unscrew the 5 fixing screws of the cover.

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  4. Push the screwdriver a few millimeters under the cover so that it can be touched with your fingers. Now lift the cover carefully. Attention! Disconnect the ventillator cable so that the cover can be completely removed (see next step).
    • Push the screwdriver a few millimeters under the cover so that it can be touched with your fingers.

    • Now lift the cover carefully.

    • Attention! Disconnect the ventillator cable so that the cover can be completely removed (see next step).

  5. Since the ventillator is mounted under the cover, its power supply cable must first be disconnected so that the cover can then be completely removed.
    • Since the ventillator is mounted under the cover, its power supply cable must first be disconnected so that the cover can then be completely removed.

  6. Carefully remove the BIOS battery from its holder.
    • Carefully remove the BIOS battery from its holder.

    • Do not throw away the battery! In Switzerland, the electrical shops are obliged to accept all batteries and accumulators for disposal.

Conclusion

For reassembly, follow the instructions in reverse order.

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Felice Suglia

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