Compaq Evo n400c Compaq Mobile Expansion Unit - Page 29

External Device Connection Problems and Solutions, Problem, Possible Cause, Solution, Troubleshooting

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Troubleshooting External Device Connection Problems and Solutions Problem A new device is not recognized as part of the computer system. Possible Cause The signal cable or power cord of the new device is loose or disconnected. More than one optional device has the same interrupt request (IRQ) setting. The device may have been inserted while power was on. Solution I Ensure that all cables are properly and securely connected. I Ensure that all power cords are properly and securely plugged into an electrical outlet. Correct the IRQ settings for optional devices that are conflicting. Turn the computer Off, then insert the new device. Turn on external devices with power switches. Restart the system. Reference Guide A-3

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Troubleshooting
Reference Guide
A–3
External Device Connection Problems and Solutions
Problem
Possible Cause
Solution
A new device is not
recognized as part of
the computer system.
The signal cable or
power cord of the new
device is loose or
disconnected.
■
Ensure that all
cables are properly
and securely
connected.
■
Ensure that all
power cords are
properly and
securely plugged
into an electrical
outlet.
More than one optional
device has the same
interrupt request (IRQ)
setting.
Correct the IRQ settings
for optional devices that
are conflicting.
The device may have
been inserted while
power was on.
Turn the computer Off,
then insert the new
device. Turn on external
devices with power
switches. Restart the
system.