Dell 640M Laptop User Manual


 
92 Troubleshooting
IF YOU HAVE PROBLEMS WITH AN EXPRESSCARD NOT PROVIDED BY DELL Contact the ExpressCard
manufacturer.
IEEE 1394 Device Problems
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
E
NSURE THAT THE IEEE 1394 DEVICE IS RECOGNIZED BY WINDOWS
1
Click the
Start
button and click
Control Panel
.
2
Click
Printers and Other Hardware
.
If your IEEE 1394 device is listed, Windows recognizes the device.
IF YOU HAVE PROBLEMS WITH A DELL-PROVIDED IEEE 1394 DEVICE Contact Dell or the IEEE 1394 device
manufacturer. See
"Contacting Dell" on page 135.
I
F YOU HAVE PROBLEMS WITH AN IEEE 1394 DEVICE NOT PROVIDED BY DELL Contact Dell or the IEEE 1394
device manufacturer. See
"Contacting Dell" on page 135.
Ensure that the IEEE 1394 device is properly inserted into the connector
Keyboard Problems
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
NOTE: Use the integrated keyboard when running the Dell Diagnostics or the system setup program. When you
attach an external keyboard, the integrated keyboard remains fully functional.
External Keyboard problems
NOTE: When you attach an external keyboard, the integrated keyboard remains fully functional.
C
HECK THE KEYBOARD CABLE Shut down the computer. Disconnect the keyboard cable and check it for
damage, and firmly reconnect the cable.
If you are using a keyboard extension cable, disconnect it and connect the keyboard directly to the
computer.
CHECK THE EXTERNAL KEYBOARD
1
Shut down 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
All Programs
Accessories
, and then
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.