IEEE 1394 Device ProblemsKeyboard ProblemsLockups and Software ProblemsThe computer does not start upThe computer stops respondingNOTE: If the error message is not listed, see the documentation for the operating system or the program that was running when the me]ssageappeared.CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.Ensure that the cable for the IEEE 1394 device is properly inserted into the device and into the connector on the computerIf you have problems with a Dell IEEE 1394 device —Contact Dell (see Contacting Dell).If you have problems with an IEEE 1394 device not provided by Dell — Contact the IEEE 1394 device manufacturer.CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.Check the keyboard cable —l Ensure that the keyboard cable is firmly connected to the computer.l Shut down the computer (see Preparing to Work Inside Your Computer), reconnect the keyboard cable as shown on the setupdiagram for your computer, and then restart the computer.l Ensure that the cable is not damaged or frayed and check cable connectors for bent or broken pins. Straighten any bent pins.l Remove any keyboard extension cables and connect the keyboard directly to the computer.Test the keyboard — Connect a properly working keyboard to the computer, then try using the keyboard.Run the Hardware Troubleshooter —See Resolving Software and Hardware Incompatibilities.CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.Check the diagnostic lights — See Diagnostic Lights.Ensure that the power cable is firmly connected to the computer and to the electrical outletNOTICE: You may lose data if you are unable to perform an operating system shutdown.