See "Resolving Software and Hardware Incompatibilities."
Keyboard Problems
Restart the computer —
•If the mouse is functioning, shut down the computer through the Start menu. After the computer shuts down, press the power button to restart the computer.
•If the computer does not respond to a keystroke or the mouse, press the power button for at least 8 to 10 seconds until the computer turns off. Press the power button again to restart the computer.
Check the keyboard cable —
•Ensure that the keyboard cable is firmly connected to the computer.
•Shut down the computer, reconnect the keyboard cable as shown on the Start Here setup diagram for your computer, and then restart the computer.
•Ensure that the keyboard cable is firmly connected to the computer.
•Check the cable connector for bent or broken pins and for damaged or frayed cables. Straighten bent pins.
•Remove keyboard extension cables and connect the keyboard directly to the computer.
Test the keyboard — Connect a properly working keyboard to the computer, and try using the keyboard. If the new keyboard works, the original keyboard is faulty.
Check for interrupt request conflicts — See "Resolving Software and Hardware Incompatibilities."
Mouse Problems
Restart the computer —
1.Simultaneously press <Ctrl><Esc> to display the Start menu.
2.Type u, press the keyboard arrow keys to highlight Shut down or Turn Off, and then press <Enter>.
3.After the computer turns off, press the power button to restart the computer.
If you connected the mouse before turning on the computer, reconnect the mouse cable —
1.Simultaneously press <Ctrl><Esc> to display the Start menu.
2.Type u, press the keyboard arrow keys to highlight Shut down or Turn Off, and then press <Enter>.
3.After the computer turns off, reconnect the mouse cable as shown on the Start Here setup diagram for your computer.
4.Start the computer.
If you connected the mouse after turning on the computer, remove the power cable, and then reconnect the mouse cable —
If the mouse is connected after the power is turned on, the mouse appears to be nonfunctional. To make the mouse function properly:
1.While your computer is on, remove the power cable from the back of the computer.
2.Connect the mouse to the computer.
3.Reconnect the power cable.
4.Turn on your computer.
Pressing the power button does not clear the computer's settings and does not restore mouse functionality.
Check the mouse cable —
•Check the cable connector for bent or broken pins and for damaged or frayed cables. Straighten bent pins.
•Ensure that the cable is firmly connected to the computer.
Test the mouse — Connect a properly working mouse to the computer, and try using the mouse. If the new mouse works, the original mouse was faulty.
Check the mouse settings —
1.Click the Start button, click Control Panel, and then click Printers and Other Hardware.
2.Click Mouse.
3.Try adjusting the settings.
Reinstall the mouse driver — See "Reinstalling Drivers."
Check for interrupt request conflicts — See "Resolving Software and Hardware Incompatibilities."
Network Problems
Check the network cable connector — Ensure that the network cable is connected as shown in "Setting Up a Home and Office Network" in your Owner's Manual.
Check the network lights on the back of the computer —
No light indicates that there is no network communication. Try replacing the network cable.
