Sony VAIO VPCZ2 - Manual (Page 177)

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Troubleshooting >
Networking (LAN/Wireless LAN)
What should I do if my computer cannot connect to a wireless LAN access point?
❑ Connection capability is affected by distance and obstructions. You may need to move your computer away from
obstructions or closer to any access point you may be using.
❑ Make sure the WIRELESS switch is on and the WIRELESS indicator light is lit on your computer.
❑ Make sure power to the access point is on.
❑ If you want to connect your computer to a wireless LAN access point using the 5 GHz band, make sure the option to use
the 5 GHz band or both the 2.4 GHz and 5 GHz bands is selected for Wi-Fi Settings in the VAIO Smart Network settings
window. Wireless LAN communication (IEEE 802.11a standard) using only the 5 GHz band, available on selected models
only, is disabled by default.
❑ Follow these steps to check the settings:
1 Click Start and Control Panel.
2 Click View network status and tasks under Network and Internet.
3 Click Connect to a network to confirm that your access point is selected.
❑ Make sure the encryption key is correct.
❑ Make sure Maximum Performance is selected for Wireless Adapter Settings in the Power Options window. Selecting
any other option may result in a communication failure. To change the settings, follow these steps:
1 Click Start and Control Panel.
2 Click System and Security and Power Options.
3 Click Change plan settings for the current power plan.
4 Click Change advanced power settings.
5 Double-click Wireless Adapter Settings and Power Saving Mode.
6 Select Maximum Performance from the drop-down list.