Dell Latitude P168C Quick Reference Manual

Also see for E5400 - Latitude - Core 2 Duo 2.4 GHz: Manual How-to guide How-to guide Product guide Specifications

Dell Latitude P168C Quick Reference Manual Manual pdf 27 page image

Troubleshooting 27TroubleshootingCAUTION: To guard against the likelihood of electric shock, laceration by movingfan blades, or other expected injuries, always unplug your computer from theelectrical outlet before opening the cover.CAUTION: Before you begin any of the procedures in this section, follow thesafety instructions that shipped with your computer.ToolsPower LightsThe two-color power-button light located on the front and on the top cover ofyour laptop turns on and blinks or remains solid to indicate different states:• If the power light is off, the computer is either turned off or is notreceiving power.• If the power light is steady blue and the computer is not responding,ensure that the display is connected and powered on.• If the power light is blinking blue, the computer is in standby mode. Pressa key on the keyboard, move the mouse, or press the power button toresume normal operation. If the power light is blinking amber, thecomputer is receiving electrical power, a device such as a memory moduleor graphics card might be malfunctioning or incorrectly installed.Beep CodesYour computer might emit a series of beeps during start-up if the monitorcannot display errors or problems. This series of beeps, called a beep code,identifies a problem. One possible beep code consists of repetitive three shortbeeps. This beep code tells you that the computer encountered a possiblemotherboard failure.If your computer beeps during start-up:1 Write down the beep code.2 Run the Dell Diagnostics to identify a more serious cause (see "DellDiagnostics" on page 36).