Lenovo 20GL, User Manual

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4. To remove any crumbs or dust from beneath the keys, you can use a camera blower with a brush
or cool air from a hair dryer.
Cleaning your computer display
To clean the computer display, do the following:
1. Gently wipe the display with a dry, soft, lint-free cloth. If you see a scratchlike mark on your display, it
might be a stain transferred from the keyboard when the cover was pressed from the outside.
2. Wipe or dust the stain gently with a soft, dry cloth.
3. If the stain remains, moisten a soft, lint-free cloth with water or a 50-50 mixture of isopropyl alcohol and
water that does not contain impurities.
Note: Avoid spraying cleaner directly onto the keyboard.
4. Wring out as much of the liquid as you can.
5. Wipe the display again; do not let any liquid drip into the computer.
6. Be sure to dry the display before closing it.
Computer stops responding
Print these instructions now and keep it with your computer for reference later.
If your computer is completely unresponsive (you cannot use the touch pad or the keyboard), do the following:
1. Press and hold the power button or power key until the computer turns off. After the computer is
turned off, restart the computer by pressing the power button or power key. If the computer does not
turn on, continue with step 2.
2. While the computer is off, remove the Lenovo USB-C 45W AC Adapter from the computer. Hold down
the power button or power key for eight seconds. Connect the Lenovo USB-C 45W AC Adapter. If the
computer does not turn back on, continue with step 3.
3. While the computer is off, remove the Lenovo USB-C 45W AC Adapter from the computer. Remove
all external devices that are attached to your computer (keyboard, mouse, printer, scanner, and so
on). Repeat step 2.
Note: If the computer starts with ac power but does not start when ac power is disconnected, call the
Customer Support Center for support. Go to http://www.lenovo.com/support/phone for the latest list of
support phone numbers for your country or region.
If the computer still does not start up, call the Customer Support Center and a Customer Support Specialist
will assist you.
Spills on the keyboard
With a mobile computer, there are increased chances of spilling liquids on the keyboard. Because most
liquids conduct electricity, liquid spilled on the keyboard could create numerous short circuits, potentially
causing irreparable damage to your computer.
If you spill something on your computer:
Attention: Ensure that no liquid creates a short circuit between you and the Lenovo USB-C 45W AC Adapter
(if in use). Although you might lose some data or work by turning off the computer immediately, leaving the
computer on might make your computer unusable.
1. Carefully disconnect the Lenovo USB-C 45W AC Adapter immediately.
Chapter 4
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Troubleshooting computer problems
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