Lenovo 8991, 6490, 9635, 9637, 9277, 9269, 9631, 9283, 9287, 9265, 9383, 9379, 9648, 9387 Diagnostic programs

Symptom	Action
The Enhanced Performance USB	Verify that:
Keyboard does not work.	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.
The mouse does not work. The	Verify that:
computer does not respond to	v The computer is turned on.
the mouse.	v The mouse is securely connected to the mouse connector on the computer.
	v The mouse is clean. Refer to “Cleaning the mouse” on page 57 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.
The operating system will not	Verify that:
start.	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. See “Selecting a startup
	device” on page 49 for more 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.
The computer beeps multiple	Verify that no keys are stuck down.
times before the operating	If you cannot correct the problem, have the computer serviced. Refer to the
system starts.
	safety and warranty information that is provided with your computer for a list of
	service and support telephone numbers.

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 diagnostic programs preinstalled on your computer to help you diagnose problems:

vPC-Doctor for Windows (used when diagnosing problems while running the Windows operating system)

vPC-Doctor for DOS or PC-Doctor for Windows PE, depending upon your machine type and model (used when your Windows operating system will not start)

Notes:

1.You can download the latest version of the PC-Doctor for Windows and PC-Doctor for DOS diagnostic programs from http://www.lenovo.com/ support/. Type your machine type into the Use Quick Path field and click Go to find the downloadable files that are specific to your computer.

2.If you are unable to isolate and repair the problem yourself after you run PC-Doctor for Windows and depending upon your machine type and model, PC-Doctor for DOS or PC-Doctor for Windows PE, save and print the log files

54User Guide