Quick Reference Guide

support.dell.com Checking the Equipment 6-3
2. Swap the faulty keyboard with a working keyboard. To swap a faulty keyboard,
unplug the keyboard cable from the computer's back panel and plug in a working
keyboard.
Is the problem resolved?
Ye s .
The keyboard must be replaced. See Chapter 11, “Getting Help,” for instruc-
tions on obtaining technical assistance.
No.
Go to step 3.
3. Run the keyboard test in the Dell Diagnostics.
Can you use the keyboard to select the keyboard test?
Ye s .
Go to step 5.
No.
Go to step 4.
4. Swap the faulty keyboard with a working keyboard.
5. Did the keyboard test run successfully?
Ye s .
The keyboard must be replaced. See Chapter 11, “Getting Help,” for instruc-
tions on obtaining technical assistance.
No.
The keyboard controller on the system board is faulty. See Chapter 11, “Get-
ting Help,” for instructions on obtaining technical assistance.

This procedure determines whether the computer's basic I/O functions are opera-
tional. If a system error message indicates an I/O port problem or the device
connected to the port does not function properly, perform the following steps:
1. Enter the System Setup program, and check the
Serial Port 1
,
Serial Port 2
, and
Parallel Port
settings.
Are the communications ports set to
Enabled
?
Ye s .
Go to step 3.
No.
Go to step 2.
2. Change the
Serial Port 1
,
Serial Port 2
, and
Parallel Port
settings to
Enabled
;
then reboot the system.
Is the problem resolved?
Ye s .
You have fixed the problem.
No.
Go to step 3.