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1–28 Troubleshooting
Problems and Solutions
USB Problems
Problem Possible Cause Solution
External device
connected to the
USB connector does
not work.
The external device
does not start up.
If the external device
requires external power,
ensure that it is plugged
into the electrical outlet
correctly.
The external device is
defective.
Try the external device
in another USB
connector on your
notebook or a USB
connector on another
notebook to verify the
problem.
USB device needs a
driver update.
Check with your USB
device manufacturer for
updated drivers.
External device
produced an
overcurrent event.
Connect the external
device to another USB
connector, or if the
device can use external
power, connect it to an
electrical outlet.
Resource conflict in
device manager.
Check the device
manager in the
operating system for
resource conflicts and
change the resources.