44 Troubleshooting7 When the Dell Diagnostics Main Menu appears, select the test that youwant to run, and follow the instructions on the screen.Troubleshooting TipsFollow these tips when troubleshooting your computer:• If you added or removed a part before the problem started, review theinstallation procedures and ensure that the part is correctly installed (seeyour Service Manual at support.dell.com).• If a device does not work, ensure that the device is properly connected.• If an error message appears on the screen, write down the exact message.This message may help support personnel to diagnose and fix theproblem(s).• If an error message occurs in a program, see the program documentation.NOTE: The procedures in this document were written for the Windows defaultview, so they may not apply if you set your Dell computer to the Windows Classicview.Power ProblemsCAUTION: Before you begin any of the procedures in this section, follow thesafety information that shipped with your computer.IF T H E P O W E R L I G H T I S O F F — The computer is either turned off or is not receivingpower.• Reseat the power cable in the power connector on the back of the computer and theelectrical outlet.• Bypass power strips, power extension cables, and other power protection devices toverify that the computer turns on properly.• Ensure that any power strips being used are plugged into an electrical outlet and areturned on.• Ensure that the electrical outlet is working by testing it with another device, such as alamp.• Ensure that the main power cable and front panel cable are securely connected to thesystem board (see your Service Manual at support.dell.com).