Dell T3400 Lockups and Software Problems, Computer does not start up, Computer stops responding

•Ensure that the cable is not damaged or frayed and check cable connectors for bent or broken pins. Straighten any bent pins.

•Remove any keyboard extension cables and connect the keyboard directly to the computer.

TE S T T H E K E Y B O A R D — Connect a properly working keyboard to the computer, then try using the keyboard.

R U N T H E H A R D W A R E TR O U B L E S H O O T E R — See "Hardware Troubleshooter" on page 107.

Lockups and Software Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

The computer does not start up

C H E C K T H E D I A G N O S T I C L I G H T S — See "Diagnostic Lights" on page 100.

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

The computer stops responding

NOTICE: You may lose data if you are unable to perform an operating system shutdown.

TU R N T H E C O M P U T E R O F F — 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), and then restart your computer.

A program stops responding

E N D T H E P R O G R A M —

1 Press <Ctrl><Shift><Esc> simultaneously to access the Task Manager.

2 Click the Applications tab.

3 Click to select the program that is no longer responding.

4 Click End Task.

A program crashes repeatedly

NOTE: Most software includes installation instructions in its documentation or on a floppy disk, CD, or DVD.

Troubleshooting

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