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Symptom
The USB Keyboard does not
work.
The mouse does not work. The
computer does not respond to
the mouse.
The operating system will not
start.
The computer beeps multiple
times before the operating
system starts.
Diagnostic programs
Diagnostic programs are used to test hardware components of your computer and
report operating-system-controlled settings that can cause hardware failures. There
are two programs preinstalled on your computer to help you diagnose computer
problems:
v Lenovo ThinkVantage Toolbox (used when you are running the Windows
v PC-Doctor for Rescue and Recovery (used when your Windows operating
Notes:
1. You can also download the PC-Doctor for DOS diagnostic program from:
2. If you are unable to isolate and repair the problem yourself after running the
36
User Guide
Action
Verify that:
v The computer is turned on.
v The keyboard is securely connected to a USB connector on the front or rear of
the computer.
v No keys are stuck.
If you cannot correct the problem, have the computer serviced. Refer to the
safety and warranty information that is provided with your computer for a list of
service and support telephone numbers.
Verify that:
v The computer is turned on.
v The mouse is securely connected to the mouse connector on the computer.
v The mouse is clean. Refer to "Cleaning an optical mouse" on page 38 for
further information.
If you cannot correct the problem, have the computer serviced. Refer to the
safety and warranty information that is provided with your computer for a list of
service and support telephone numbers.
Verify that:
v There is no diskette in the diskette drive.
v The startup sequence includes the device where the operating system resides.
Usually, the operating system is on the hard disk drive. For more information,
see "Selecting a startup device" on page 23.
If you cannot correct the problem, have the computer serviced. Refer to the
safety and warranty information that is provided with your computer for a list of
service and support telephone numbers.
Verify that no keys are stuck down.
If you cannot correct the problem, have the computer serviced. Refer to the
safety and warranty information that is provided with your computer for a list of
service and support telephone numbers.
operating system)
system does not start)
http://www.lenovo.com/support
See "PC-Doctor for DOS" on page 37 for detailed information.
diagnostic programs, save and print the log files created by the diagnostic
programs. You will need the log files when you speak to a Lenovo technical
support representative.
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