Chapter 6. Troubleshooting and diagnostic programs
This chapter provides information about some basic troubleshooting and diagnostic programs. If your computer problem is not described in this chapter, see Chapter 7 “Getting information, help, and service” on page 67 for additional troubleshooting resources.
This chapter contains the following topics:
•“Basic troubleshooting” on page 63
•“Diagnostic programs” on page 64
•“Cleaning an optical mouse” on page 65
Basic troubleshooting
The following table provides some basic information to help you troubleshoot your computer problems.
Note: If you cannot solve the problem after doing the basic troubleshooting, have the computer serviced. Refer to the ThinkCentre Safety and Warranty Guide that came with your computer for the safety and warranty information and the list of service and support telephone numbers. You can also get the latest service and support telephone numbers and a PDF version of the ThinkCentre Safety and Warranty Guide from the Lenovo Support Web site at:
http://www.lenovo.com/support
Symptom | Action | |
|
| |
The computer does not start | Verify that: | |
when you press the power | • The power cord is correctly connected to the rear of the computer and to a | |
switch. | ||
working electrical outlet. | ||
| ||
| • 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 signal cable is correctly connected to the monitor and to the | |
| appropriate monitor connector on the computer. If your computer has a PCI | |
| graphics card installed, be sure to use the monitor connector on the graphics | |
| card rather than the integrated one on the system board. | |
| • 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 correctly connected to an appropriate keyboard connector (the | |
| PS/2 keyboard connector or one of the USB connectors) on the computer. | |
| • No keys are stuck. | |
|
|
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