Lenovo IdeaPad S310, Hardware Maintenance Manual

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Chapter 5. Troubleshooting and diagnostics
This chapter describes some basic troubleshooting and diagnostic programs.
Basic troubleshooting
The following table provides information to help you troubleshoot your computer problems.
Note: If you cannot correct the problem, have the computer serviced. For a list of service and support
telephone numbers, refer to the Safety, Warranty, and Setup Guide that comes with your computer or go to
the Lenovo Support Web site at http://www.lenovo.com/support/phone.
Symptom Action
The computer does not start
when you press the power
switch. Verify that:
• The power cord is correctly connected to the rear of the computer and to a
working electrical outlet.
• If your computer has a secondary power switch on the rear of the computer,
make sure that it is switched on.
• The power indicator on the front of the computer is on.
• The computer voltage matches the voltage available at the electrical outlet for
your country or region.
The monitor screen is blank.
Verify that:
• The monitor power cord is correctly connected to the monitor and to a working
electrical outlet.
• The monitor is turned on and the brightness and contrast controls are set
correctly.
• The computer voltage matches the voltage available at the electrical outlet for
your country or region.
The keyboard does not work. Verify that:
• The computer is turned on.
• The keyboard is securely connected to a USB connector on the computer.
• No keys are stuck.
The mouse does not work. Verify that:
• The computer is turned on.
• The mouse is securely connected to a USB connector on the computer.
• The mouse is clean.
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