Dell OptiPlex 960 Setup and Quick Reference Guide - Page 43

Light Pattern Steady Amber Steady Amber Steady Amber Steady Amber Steady Blue Problem Description Suggested Resolution Power connector not installed properly. • Reseat the 2x2 power connector from the power supply unit. • If the system still fails to boot, contact Dell (see "Contacting Dell" on page 66). Possible peripheral card or motherboard failure has occurred. • Remove all peripheral cards from the PCI and PCI-E slots and restart the computer. If the computer boots, add the peripheral cards back one by one until you find the bad one. • If the problem persists, the motherboard is probably bad. Contact Dell (see "Contacting Dell" on page 66). A possible motherboard failure has occurred. • Disconnect all internal and external peripherals, and restart the computer. If the computer boots, add the peripheral cards back one by one until you find the bad one. "Contacting Dell" on page 66. • If the problem persists, the motherboard is probably bad. Contact Dell (see "Contacting Dell" on page 66). A possible coin cell battery failure has occurred. • Remove the coin cell battery for one minute, reinstall the battery, and restart. • If the problem persists, contact Dell (see "Contacting Dell" on page 66). The computer is in a normal on condition. The diagnostic lights are not lit after the computer successfully boots to the operating system. • Ensure that the display is connected and powered on. • If the problem persists, contact Dell (see "Contacting Dell" on page 66). Troubleshooting Tips 43