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Symptom Action
The operating system does not
start.
Verify that you list the device where the operating system resides in the startup
device sequence. Usually, the operating system is on the hard disk drive. For more
information, see “Selecting a startup device” on page 53
.
The computer beeps multiple
times before the operating
system starts.
Verify that no keys are stuck.
Diagnostic programs
Diagnostic programs are used to test hardware components of your computer. Diagnostic programs can
also report operating-system-controlled settings that interfere with the correct operation of your system.
There are two programs preinstalled on your computer to help you diagnose computer problems:
• Lenovo ThinkVantage Toolbox (used when you are running the Windows operating system)
• PC-Doctor for Rescue and Recovery (used when you cannot start the Windows operating system)
Notes:
1. You can also download the PC-Doctor for DOS diagnostic program from http://support.lenovo.com.
See “PC-Doctor for DOS” on page 61 for detailed information.
2. If you are unable to isolate and repair the problem yourself after running the programs, save and print
the log les created by the programs. You will need the log les when you speak to a Lenovo technical
support representative.
Lenovo ThinkVantage Toolbox
The Lenovo ThinkVantage Toolbox program helps you maintain your computer, improve computing security,
diagnose computer problems, get familiar with the innovative technologies provided by Lenovo, and get
more information about your computer. You can use the diagnostics feature of the Lenovo ThinkVantage
Toolbox program to test devices, diagnose computer problems, create bootable diagnostic media, update
system drivers, and view system information.
• To run the Lenovo ThinkVantage Toolbox program on the Windows 7 operating system, click Start ➙ All
Programs ➙ Lenovo ThinkVantage Tools ➙ System Health and Diagnostics. Follow the instructions
on the screen.
• To run the Lenovo ThinkVantage Toolbox program on the Windows Vista operating system or the Windows
XP operating system, click Start ➙ All Programs ➙ ThinkVantage ➙ Lenovo ThinkVantage Toolbox.
Follow the instructions on the screen.
For additional information about running the Lenovo ThinkVantage Toolbox program, refer to the Lenovo
ThinkVantage Toolbox help system.
PC-Doctor for Rescue and Recovery
The PC-Doctor for Rescue and Recovery program is part of the Rescue and Recovery workspace on your
Lenovo computer. Use the PC-Doctor for Rescue and Recovery program if you are unable to start the
Windows operating system.
To run the PC-Doctor for Rescue and Recovery program from the Rescue and Recovery workspace, do
the following:
1. Turn off the computer.
2. Repeatedly press and release the F11 key when turning on the computer. When you hear beeps or see
a logo screen, release the F11 key. The Rescue and Recovery workspace opens after a short delay.
60 ThinkCentre User Guide