User's Manual

If the screen is blank but you have not turned off the computer, one or more of these
setting may be the cause:
The device may be in the Sleep state. To exit Sleep, briefly press the power button. Sleep
is an energy-saving feature that turns off the display. Sleep can be initiated by the system
while the computer is on but is not in use, or when the computer has reached a low
battery level. To change these and other power settings, right click the battery icon on the
Windows desktop in the notification area, at the far right of the taskbar, and then click
preferences.
Software is functioning abnormally
If the software is unresponsive or responds abnormally, restart the computer by clicking
on the start menu icon and then on/off, and then click shut down. If you cannot
restart the computer using this procedure, see the previous section, “The computer is on
but not responding”.
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 
The wireless network connection is not working
If a wireless network connection is not working as expected, follow these suggestions:

To enable or disable a wireless or wired network device, right-click the network
connection icon on the Windows desktop in the notification area, at the far right of
the taskbar. To enable devices, select the check box from the menu option. To
disable the device, clear the check box. 
Be sure that the wireless device is turned on. 
Be sure that the computer wireless antennas are free from obstructions. 
Be sure that the cable of DSL modem and its power cord are properly connected
and that the lights are on. 
Be sure that the wireless router or access point is properly connected to its power
adapter and to the cable or DSL modem, and that the lights are on. 
Disconnect and then reconnect all cables, and turn the power off and then back on. 










16