Back to Contents PageSolving ProblemsDell Precision™ Workstations 450 and 650 User's GuideTroubleshooting Your ComputerBattery ProblemsCard ProblemsDrive ProblemsDropped or Damaged ComputerE-Mail, Modem, and Internet ProblemsError MessagesGeneral ProblemsIEEE 1394 Device ProblemsKeyboard ProblemsMemory ProblemsMicroprocessor ProblemsMouse ProblemsNetwork ProblemsPower ProblemsPrinter ProblemsSerial or Parallel Device ProblemsSound and Speaker ProblemsSystem Board ProblemsVideo and Monitor ProblemsTroubleshooting Your ComputerFollow these tips when troubleshooting your computer:l If you added or removed a computer part before the problem started, review the installation procedures and ensure that the part is correctly installed.l If a peripheral device does not work, ensure that the device is properly connected.l If an error message appears on the screen, write down the exact message. This message may help technical support diagnose and fix the problem(s).l If an error message occurs in a program, consult the program's documentation.Battery ProblemsFill out the Diagnostics Checklist as you complete these checks.Card ProblemsFill out the Diagnostics Checklist as you complete these checks.CAUTION: There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent typerecommended by the manufacturer. Discard used batteries according to the manufacturer's instructions.CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.Replace the battery — If you have to repeatedly reset time and date information after turning on the computer, or if an incorrect time ordate displays during start-up, replace the battery. If the battery still does not work properly, contact Dell.CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.Check the card seating and cable —1. Turn off the computer and devices, disconnect them from electrical outlets, wait 10 to 20 seconds, and then open the computer cover.