TE S T T H E K E Y B O A R D Connect a properly working keyboard to the computer, and try using the keyboard. If the new keyboard works, the original keyboard is faulty.

CH E C K F O R I N T E R R U P T R E Q U E S T C O N F L I C T S See page 70.

Mouse Problems

RE S T A R T T H E C O M P U T E R

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 Y O U C O N N E C T E D T H E M O U S E B E F O R E T U R N I N G O N T H E C O M P U T E R, R E C O N N E C T T H E M O U S E C A B L E

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 setup diagram for your computer.

4 Start the computer.

IF Y O U C O N N E C T E D T H E M O U S E A F T E R T U R N I N G O N T H E C O M P U T E R, R E M O V E T H E P O W E R C A B L E , A N D T H E N R E C O N N E C T T H E M O U S E

C A B L E 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.

Solving Problems

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Dell K0004, DHM manual Mouse Problems