Dell Precision T5400 Quick Reference Guide - Page 49

Power Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. I F T H E P O W E R L I G H T I S G R E E N 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 - See "Power Lights" on page 27. I F T H E P O W E R L I G H T I S B L I N K I N G G R E E N - The computer is in standby mode. Press a key on the keyboard, move the mouse, or press the power button to resume normal operation. IF THE POWER LIGHT IS OFF - The computer is either turned off or is not receiving power. • Reseat the power cable in the power connector on the back of the computer and the electrical outlet. • Bypass power strips, power extension cables, and other power protection devices to verify that the computer turns on properly. • Ensure that any power strips being used are plugged into an electrical outlet and are turned on. • Ensure that the electrical outlet is working by testing it with another device, such as a lamp. • Ensure that the main power cable and front panel cable are securely connected to the system board (see "System Board Components" in your User's Guide). I F 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 receiving electrical power, but an internal power problem may exist. • Ensure that the voltage selection switch is set to match the AC power at your location (if applicable). • Ensure that all components and cables are properly installed and securely connected to the system board (see "System Board Components" in your User's Guide). I F T H E P O W E R L I G H T I S S T E A D Y A M B E R - A device may be malfunctioning or incorrectly installed. • Remove and then reinstall all memory modules (see "Removing the Front Panel" in your User's Guide). • Remove and then reinstall any expansion cards, including graphics cards (see "Removing a PCI Card" in your User's Guide). E L I M I N A T E I N T E R F E R E N C E - Some possible causes of interference are: • Power, keyboard, and mouse extension cables • Too many devices connected to the same power strip • Multiple power strips connected to the same electrical outlet Quick Reference Guide 49