Dell Latitude X1 - Manual (Page 63)

Unexpected characters
Lockups and Software Problems
The computer does not start up
The computer stops responding
A program stops responding
A program crashes repeatedly
A program is designed for an earlier Windows operating system
To verify that the problem is with the external keyboard, check the integrated keyboard —
1. Shut down the computer.
2. Disconnect the external keyboard.
3. Turn on the computer.
4. From the Windows desktop, click the Start button, point to Programs, point to Accessories, and click Notepad.
5. Type some characters on the external keyboard and verify that they appear on the display.
If the characters appear now but did not with the external keyboard, you may have a defective external keyboard. Contact Dell .
Run the keyboard diagnostics tests — Run the PC-AT Compatible Keyboards tests in the Using the Dell Diagnostics . If the tests indicate a
defective external keyboard, contact Dell .
Disable the numeric keypad — Press to disable the numeric keypad if numbers are displayed instead of letters. Verify that the
numbers lock light is not lit.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Ensure that the AC adapter is firmly connected to the computer and to the electrical outlet
NOTICE: You might lose data if you are unable to perform an operating system shutdown.
Turn the computer off — If you are unable to get a response by pressing a key on your keyboard or moving your mouse, press and hold
the power button for at least 8 to 10 seconds until the computer turns off. Then restart your computer.
End the program —
1. Press simultaneously.
2. Click Applications.
3. Click the program that is no longer responding.
4. Click End Task.
NOTE: Software usually includes installation instructions in its documentation or on a floppy disk or CD.
Check the software documentation — If necessary, uninstall and then reinstall the program.
If you are using Windows XP, run the Program Compatibility Wizard — The Program Compatibility Wizard configures a program so it runs
in an environment similar to non-Windows XP operating system environments.
1. Click the Start button, point to All Programs® Accessories, and then click Program Compatibility Wizard.