Dell Inspiron 4150 - Manual (Page 65)

Solving Problems 65
External Keyboard Problems
HINT: When you attach
an external keyboard, the
integrated keyboard
remains fully functional.
T O V E R IF Y T H A T T H E P R O BL E M IS W I T H T H E M O US E , C HE C K T H E
T O U C H P A D —
1 Turn off the computer.
2 Disconnect the mouse.
3 Turn on the computer.
4 At the Windows desktop, use the touch pad to move the cursor around, select
an icon, and open it.
If the touch pad operates correctly, the mouse may be defective.
R E I NS T AL L THE T O U C H P A D D RI V E R — See page 75.
C HE C K T H E K EY B O AR D C AB L E — Shut down the computer (see page 38).
Disconnect the keyboard cable and check it for damage. For PS/2 cables, check
the cable connector for bent or broken pins. Firmly reconnect the cable.
If you are using a keyboard extension cable, disconnect it and connect the
keyboard directly to the computer.
C HE C K T H E EX T E R NA L KE Y B OA R D —
1 Turn off the computer, wait 1 minute, and turn it on again.
2 Verify that the numbers, capitals, and scroll lock lights on the keyboard blink
during the boot routine.
3 From the Windows ® desktop, click the Start button, point to Programs, point
to Accessories, and click Notepad.
4 Type some characters on the external keyboard and verify that they appear on
the display.
If you cannot verify these steps, you may have a defective external keyboard.