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Chapter 3. Troubleshooting
Troubleshooting
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If you do not find your problem here, see Chapter 1. The following section only describes problems
that might negate the need to refer to the more comprehensive information in Chapter 1.
Display problems
When I turn on the computer,
nothing appears on the screen.
• If the screen is blank, make sure that:
- The AC adapter is connected to the computer and the
power cord is plugged into a working electrical outlet.
- The computer power is on. (Press the power button again
for confirmation.)
• If these items are properly set, and the screen remains blank,
have the computer serviced.
My screen goes blank while the
computer is on.
• Your power management is enabled. Do one of the
following to resume from sleep mode:
- Press any key on the keyboard. (Cannot be used in Tablet
mode.)
- Press the power button.
- Press the Windows button.
Sleep problems
The critical low-battery error
message appears, and the
computer immediately turns off.
• The battery power is getting low. Connect the AC adapter to
the computer.
The computer enters sleep
mode immediately after
Power-on.
• Make sure that:
- The battery is charged.
- The operating temperature is within the acceptable range.
See “Chapter 2. Use and care Information” of Lenovo Safety
and General Information Guide.
Note: If the battery is charged and the temperature is within range, have the computer serviced.
The computer does not return
from sleep mode and the
computer does not work.
• If the computer does not return from sleep mode, the
battery may be depleted. Check the power indicator.
• If your computer is in sleep mode, connect the AC adapter
to the computer, then press the Windows button or the
power button.
• If your computer is powered-off, connect the AC adapter to
the computer, then press the power button to resume
operation.
Note: If the system still does not return from sleep mode, your system has stopped responding, and you
cannot turn off the computer; reset the computer. Unsaved data may be lost. To reset the computer, press
and hold the power button for 5 seconds or more. If the computer still does not reset, remove the AC
adapter.