112 TroubleshootingKeyboard ProblemsCAUTION: Before you begin any of the procedures in this section, follow thesafety instructions in the Product Information Guide.Fill out the "Diagnostics Checklist" on page 159 as you perform the variouschecks.NOTE: Use the integrated keyboard when running the Dell Diagnostics or thesystem setup program. When you attach an external keyboard, the integratedkeyboard remains fully functional.External Keyboard problemsNOTE: When you attach an external keyboard, the integrated keyboard remainsfully functional.CH E C K T H E K E Y B O A R D C A B L E — Shut down the computer, disconnect thekeyboard cable and check it for damage, then firmly reconnect the cable.If you are using a keyboard extension cable, disconnect it and connect thekeyboard directly to the computer.CH E C K T H E E X T E R N A L K E Y B O A R D —1 Shut down the computer, wait 1 minute, and then turn it on again.2 Verify that the numbers, capitals, and scroll lock lights on the keyboardblink during the boot routine.3 From the Windows desktop, click Start →All Programs→Accessories→Notepad.4 Type some characters on the external keyboard and verify that they appearon the display.If you cannot verify these steps, you may have a defective externalkeyboard.TO V E R I F Y T H A T T H E P R O B L E M I S W I T H T H E E X T E R N A L K E Y B O A R D , C H E C K T H EI N T E G R A T E D K E Y B O A R D —1 Shut down the computer.2 Disconnect the external keyboard.3 Turn on the computer.
