Dell Precision T7400 User's Guide - Page 113
Power Lights
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Light Pattern Problem Description Suggested Resolution A possible expansion card failure has occurred. 1 Determine if a conflict exists by removing a card (not a graphics card) and restarting the computer (see "Cards" on page 194). 2 If the problem persists, reinstall the card that you removed, remove a different card, and then restart the computer. 3 Repeat this process for each card. If the computer starts normally, troubleshoot the last card removed from the computer for resource conflicts (see "Troubleshooting Software and Hardware Problems in the Microsoft® Windows® XP and Microsoft Windows Vista™ Operating Systems" on page 131). 4 If the problem persists, contact Dell (see "Contacting Dell" on page 287). Routine system activity Watch your monitor for on- preceding video initialization. screen messages. Power Lights CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. Troubleshooting Tools 113