HP EliteBook 2540p Notebook PC - Manual (Page 14)

External device problems and solutions
Problem Possible Cause Solution
A new device is not recognized as part of
the system. The computer may not be fully seated or
docked in the docking station. Undock the computer and dock it again.
Be sure the computer is properly seated
and fully docked.
The device cable or power cord is loose. ● Be sure that all cables are securely
connected to the device and the
docking station.
● Be sure that all power cords are
securely plugged into the device or
docking station and into an AC
outlet.
The device was connected while the
system was on. Turn off the computer, turn on the device
(if applicable), and then turn on the
computer.
Cabling is incorrect. Be sure that the device cable is in the
correct connector on the docking station.
You may need to install device drivers on
the computer. Install drivers according to the device
manufacturer's instructions.
10 Chapter 4 Troubleshooting