الثلاثاء، 4 أكتوبر 2011

problem with wireless adapter or access Point

This issue occurs if the Wi-Fi hot spot uses wireless APs or routers that don’t support the 802.11 power save protocol. Choose one of the following three procedures to resolve the issue:

  Method 1: Modify the default power saving power plan
Modify the default on-battery power setting for the wireless network adapter. Configure the wireless network adapter to use the Maximum Performance setting when Windows Vista or Windows 7 is configured to use the Balanced power plan or the Power saver power plan. To do this, follow these steps:
1.    Click Start
Collapse this imageExpand this image, type Power Options in the Start Search box, and then click Power Options in the Programs list.
Collapse this imageExpand this imageIf you are prompted for an administrator password or confirmation, type your password or click Continue.
2.    Click Change plan settings under the power plan that is selected. For example, if the Balanced option is selected, click Change plan settings under Balanced.
3.    Click Change advanced power settings.
4.    In the Power Options dialog box, expand Wireless Adapter Settings, and then expand Power Saving Mode.
5.     In the list that appears next to On battery, click Maximum Performance, and then click OK.
 Method 2
You could modify the power saving settings of the wireless network adapter to work around this issue. To do this, follow these steps:
1.    Click Start, click Run, type ncpa.cpl, and then click OK.
2.    In the Network Connections dialog box, right-click the wireless network adapter, and then click Properties.
3.    Click Configure under the name of the network card.
4.    Click the Advanced tab, and then modify the power management settings. For example, click Power Management in the Property list, drag the Value slider to the power management setting that you want to use, and then click OK.

Note These settings may differ depending on the manufacturer of the wireless network adapter.
 Method 3


To work around this problem, manually create a network profile by using the Manually Connect to a Wireless Network Wizard and by selecting shared-mode network authentication. To do this, follow these steps:
1.    Click Start
Collapse this imageExpand this image, type network and sharing in the Start Search box, and then click Network and Sharing Center in the Programs list.
Collapse this imageExpand this imageIf you are prompted for an administrator password or for confirmation, type your password, or click Continue.
2.    Click Manage Wireless Networks, and then click Add.
3.    Click Manually create a network profile.
4.    In the Network Name box, enter the name of the network.
5.    In the Security type box, click Shared.

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