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Resolving Power-On Problems

Sometimes a desktop or laptop may not power on. This could be due to battery problems or other power issues. To resolve:

  1. Hold the power button down for 10 seconds. Wait a few more seconds, then power the machine back on.

  2. If that doesn't work, if the system has an easily-removed battery, remove the battery. Unplug the AC adaptor. Then reattach the AC adaptor, and power on.

    If the machine powers on, turn it off, reinstall the battery. If the machine then fails to start, go back to 2. Once the system has started, attach the battery while the system is running. The battery should start charging.

    If the system shuts down after the battery is attached, or never charges, or the system cannot stay on with battery power, obtain a new battery. (Dispose of the old battery properly.)

  3. If that doesn't work, or the battery can't be removed, plug the AC adaptor into a different power point and leave it charging for 10 minutes.

  4. If that doesn't work, unplug everything from the machine, including keyboards, USB devices, monitor, power leads. Reattach only the power, and turn on. If that works, other devices can be reattached.

  5. Try another power cord and/or AC adaptor.

If the machine still doesn't start:

  • If some lights come on and there is a fan noise, it may indicate bad memory or a bad system board. If the machine has more than one RAM chip, it may be possible to remove chips one by one until the faulty one can be isolated.

  • If there are no lights and no noise, it may indicate a bad power supply or bad system board.

  • Some startup problems may be caused by a failed disk drive.

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