HP EliteBook 2540P, Руководство по началу работы

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Getting Started 15
Product Information and Troubleshooting
The computer is unusually warm
It is normal for the computer to feel warm to the touch while it is in use. But if the computer
feels
unusually warm, it may be overheating because a vent is blocked.
If you suspect that the computer is overheating, turn off the computer to allow the computer
to cool to room temperature. Then be sure to keep all vents free from obstructions while you
are using the computer.
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WARNING: To reduce the possibility of heat-related injuries or of overheating the computer,
do not place the computer directly on your lap or obstruct the computer air vents. Use the
computer only on a hard, flat surface. Do not allow another hard surface, such as an
adjoining optional printer, or a soft surface, such as pillows or rugs or clothing, to block
airflow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as
pillows or rugs or clothing, during operation. The computer and the AC adapter comply
with the user-accessible surface temperature limits defined by the International Standard for
Safety of Information Technology Equipment (IEC 60950).
✎
The fan in the computer starts up automatically to cool internal components and prevent
overheating. It is normal for the internal fan to cycle on and off during routine operation.
An external device is not working
Follow these suggestions if an external device does not function as expected:
■
Turn on the device according to the manufacturer’s instructions.
■
Be sure that all device connections are secure.
■
Be sure that the device is receiving electrical power.
■
Be sure that the device, especially if it is older, is compatible with the operating system.
■
Be sure that the correct drivers are installed and updated.
If a WLAN connection is not working as expected, follow these suggestions:
■
Be sure that the wireless lights on the computer are blue.
■
Be sure that the computer wireless antennas are free from obstructions.
■
Be sure that the DSL or the cable modem and its power cord are properly connected,
and the lights are on.
■
If applicable, be sure that the wireless router (access point) is turned on and properly
connected to the DSL or the cable modem.
■
Disconnect and then reconnect all cables, and turn the power off and then back on.
✎
For more information on wireless technology, refer to the relevant Help topics and Web
site links in Help and Support.
The WLAN connection is not working