Troubleshooting 45IF 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 "Beep Codes" on page 33.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. Pressa key on the keyboard, move the mouse, or press the power button to resume normaloperation.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 receiving electricalpower, a device might be malfunctioning or incorrectly installed.• Remove and then reinstall all memory modules (see your Service Manual atsupport.dell.com).• Remove and then reinstall any expansion cards, including graphics cards (see yourService Manual at support.dell.com).IF 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 — There is a power problem, a device maybe malfunctioning or incorrectly installed.• Ensure that the processor power cable is securely connected to the system boardpower connector (see your Service Manual at support.dell.com).• Ensure that the main power cable and the front panel cable are securely connected tothe system board connector (see your Service Manual at support.dell.com).EL 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 outletMemory ProblemsCAUTION: Before you begin any of the procedures in this section, follow thesafety information that shipped with your computer.IF Y O U R E C E I V E A N I N S U F F I C I E N T M E M O R Y M E S S A G E —• Save and close any open files and exit any open programs you are not using to see ifthat resolves the problem.• See the software documentation for minimum memory requirements. If necessary,install additional memory (see your Service Manual at support.dell.com).• Reseat the memory modules (see your Service Manual at support.dell.com) to ensurethat your computer is successfully communicating with the memory.• Run the Dell Diagnostics (see "Dell Diagnostics" on page 42).