Dell Inspiron One19 Dell™ Technology Guide - Page 274

- Replace power protection devices, power strips, and power extension cables with similar products in known working condition 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 the Service Manual for your computer). • 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 the Service Manual for your computer). • If the power light is steady amber, a device may be malfunctioning or incorrectly installed. - Remove and then reinstall the memory modules (see the documentation shipped with your computer). - Remove and then reinstall any cards (see the documentation shipped with your computer). • 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 Diagnostic Lights for Desktop Computers Some desktop computers have lights labeled with numbers on the front panel. When the computer starts normally, the lights flash, and then turn off. If the computer malfunctions, the sequence of the lights can be used to help identify the problem. 274 Troubleshooting