7.Run the Video Test Group in the system diagnos- tics again.
Do the tests complete successfully?
Yes. The monitor must be replaced. See Chapter 11, “Getting Help,” for instructions on obtaining tech- nical assistance.
No. If a video expansion card is installed in the com- puter, see “Troubleshooting Expansion Cards” in Chapter 7. If no video expansion card is installed, the
Troubleshooting the Keyboard
This procedure determines what kind of keyboard prob- lem you have. If a system error message indicates a keyboard problem when you start up the computer sys- tem or while the system diagnostics is running, complete the following steps:
1.Look at the keyboard and the keyboard cable for any signs of damage. Press and release each key on the keyboard.
Do the keyboard and its cable appear to be free of physical damage, and do the keys work?
Yes. Go to step 3.
No. Continue to step 2.
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?
Yes. The keyboard must be replaced. See Chap- ter 11, “Getting Help,” for instructions on obtaining technical assistance.
No. Continue to step 3.
3.Run the Keyboard Test Group in the system diagnostics.
See Chapter 5, “Running the System Diagnostics.”
Can you use the keyboard to select the Keyboard Test Group?
Yes. Continue to step 4. No. Go to step 5.
4.Does the Keyboard Interactive Test complete successfully?
Yes. Go to step 6.
No. Continue to step 5.
5.Swap the faulty keyboard with a working keyboard.
6.Does the Keyboard Controller Test complete successfully?
Yes. The keyboard must be replaced. See Chap- ter 11, “Getting Help,” for instructions on obtaining technical assistance.
No. The keyboard controller on the system board is faulty. See Chapter 11, “Getting Help,” for instruc- tions on obtaining technical assistance.
Troubleshooting I/O Ports
This section provides a procedure for troubleshooting the ports on the computer’s I/O panel and the equipment con- nected to them, such as a printer, scanner, or other peripheral device.
You can also use this procedure to test I/O ports on expansion cards. However, you should first complete the procedures in “Troubleshooting Expansion Cards” in Chapter 7 to verify that the card is configured and installed correctly.
If a system error message indicates a port problem or if equipment connected to a port seems to perform incorrectly or not at all, the source of the problem may be any of the following:
•A faulty connection between the I/O port and the peripheral device