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Chapter 17: Troubleshooting
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Safety guidelines
While troubleshooting your notebook, follow these safety guidelines:
■ Never remove the memory bay cover or the hard drive cover if your
notebook is turned on, the battery is installed, or while the modem cable,
network cable, or AC power adapter are connected to the notebook.
■ Make sure that you are correctly grounded before accessing internal
components. For more information about preventing damage from static
electricity, see “Preventing static electricity discharge” on page 258.
■ After you complete any maintenance tasks where you remove the memory
bay or hard drive cover, make sure that you replace the covers and hard
drive, reinstall any screws, then replace the battery before you start your
notebook.
Warning Do not try to troubleshoot your problem if power cords or
plugs are damaged, if your notebook was dropped, or if
the case was damaged. Instead, unplug your notebook
and contact a qualified computer technician.