Dell Precision T7400 (Late 2007) - Manual (Page 113)

Troubleshooting Tools 113
Power Lights
CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
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
preceding video initialization.
Watch your monitor for on-
screen messages.
Light Pattern Problem Description Suggested Resolution