Dell Vostro 410 Service Manual - Page 45

Back to Contents Page Troubleshooting Dell™ Vostro™ 410 Service Manual Tools Dell Diagnostics Solving Problems Dell Technical Update Service Dell Support Utility Tools Power Lights CAUTION: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. The power button light located on the front of the computer illuminates and blinks or remains solid to indicate different states: l If the power light is blue and the computer is not responding, see Beep Codes. l If the power light is blinking blue, the computer is in standby mode. Press a key on the keyboard, move the mouse, or press the power button to resume normal operation. l If the power light is off, the computer is either turned off or is not receiving power. ¡ Reseat the power cable into both the power connector on the back of the computer and the electrical outlet. ¡ If the computer is plugged into a power strip, ensure that the power strip is plugged into an electrical outlet and that the power strip is turned on. ¡ Bypass power protection devices, power strips, and power extension cables to verify that the computer turns on properly. ¡ 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). l If the power light is blinking amber, 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 the processor power cable is securely connected to the system board (see System Board Components). l If the power light is steady amber, a device may be malfunctioning or incorrectly installed. ¡ Remove and then reinstall the memory modules (see Replacing or Adding a Memory Module). ¡ Remove and then reinstall any cards (see PCI and PCI Express Cards). l Eliminate interference. Some possible causes of interference are: ¡ Power, keyboard, and mouse extension cables ¡ Too many devices on a power strip ¡ Multiple power strips connected to the same electrical outlet Beep Codes Your computer may emit a series of beeps during start-up if the monitor cannot display errors or problems. For example, one possible beep code may consist of three short, repeated beeps indicating that the computer has encountered a possible system board failure. If your computer emits a series of beeps during start-up: 1. Write down the beep code. 2. Run the Dell Diagnostics to further identify the problem. (see Dell Diagnostics). Code (repetitive short beeps) 1 Description BIOS checksum failure. Possible system board failure. Suggested Resolution Contact Dell (see "Contacting Dell" in your Setup and Quick Reference Guide).