Dell Precision T1600 (Early 2011) - Manual (Page 69)

Light Pattern
Problem Description Troubleshooting
Steps
Diagnostic LEDs Power Button LED
A possible system
board failure has
occurred. Remove all
peripheral cards
from the PCI and
PCI-E slots and re-
start the computer.
If the computer
boots, add the
peripheral cards
back one by one
until you find the
bad one.
Power connector
not installed
properly. Re-seat the 2x2
power connector
from the power
supply unit.
Possible peripheral
card or system
board failure has
occurred. Remove all
peripheral cards
from the PCI and
PCI-E slots and re-
start the computer.
If the computer
boots, add the
peripheral cards
back one by one
until you find the
bad one.
A possible system
board failure has
occurred.
• Disconnect all
internal and
external
peripherals, and
re-start 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
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