Dell Precision KR019 Setup And Quick Reference Manual

Also see for Precision R5400: Brochure Technical guide Specifications Manual Manual

Troubleshooting 45NOTE: 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, read and followthe safety instructions provided 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 notreceiving power.• Reseat the power cable in the power connector on the back of thecomputer and the electrical outlet.• Bypass power strips, power extension cables, and other power protectiondevices to verify that the computer turns on properly.• Ensure that any power strips being used are plugged into an electricaloutlet and are turned on.• Ensure that the electrical outlet is working by testing it with anotherdevice, such as a lamp.• Ensure that the main power cable and front panel cable are securelyconnected to the system board (see your Service Manual on the DellSupport website at support.dell.com).IF T H E P O W E R L I G H T I S B L U E A N D T H E C O M P U T E R I S N O T R E S P O N D I N G —• Ensure that the display is connected and powered on.• If the display is connected and powered on, see "System Messages" onpage 37.IF T H E P O W E R L I G H T I S B L I N K I N G B L U E — The computer is in standby mode.Press a key on the keyboard, move the mouse, or press the power button toresume normal operation.IF T H E P O W E R L I G H T I S B L I N K I N G A M B E R — The computer is receivingelectrical power, a device might be malfunctioning or incorrectly installed.• Remove and then reinstall all memory modules (see your Service Manualon the Dell Support website at support.dell.com).• Remove and then reinstall any expansion cards, including graphics cards(see your Service Manual on the Dell Support website atsupport.dell.com).