Y400, Y500, y410p, y510p wireless network card connection under the WIN8 often limited solution

Failure phenomenon:

WIN8 under the wireless network when often prompted limited, the lower right corner of the screen wireless signal has an exclamation point.

Solution:

before performing the operation, please confirm that your network card is this model, download the master, and open the network card information of the main page.

Option one: Enable "Federal Information Processing Standards (FIPS) compliant" To enhance network compatibility, click on the lower left-hand corner of the wireless signal sign;

2, right button to select the connected wireless, and then click to view the connection properties;

3, the choice of security under the advanced settings;

4, check this network to enable Federal Information Processing Standards (FIPS) compatible, and then determine.

Scenario Two: Uninstall Lenovo's Wireless drive, using Win8 's own wireless drive

1, press the Windows key (Start key) +x key combination, pull out the System menu, open Control Panel;

2, select the program (uninstall program);

3, select Lenovo_wireless_driver, then the top of the uninstall, uninstall completed, restart the computer;

4, press the Windows key (Start key) +x key combination, pull out the system menu, open Device Manager;

5, open the network adapter, the Broadcom 802.11n network adapter on the right button, open properties;

6, look at the driver's date is not 2012/3/13, if it is OK.

7, download the attachment of the wireless Limited.rar, and then unzip, on the batch on the right button, the administrator to open, and then run the restart.

8, click on the lower right corner of the wireless network, the wireless signal has been connected to the right click, choose to forget this network, and then reconnect.

9, when the connection will ask you whether to enable sharing, please choose No (important), if the choice is, please click on the wireless signal right click to change.

Option three: Upgrade Broadcom wireless network card driver to 6.31.139.2 Edition

1, download Broadcom wireless network card driver to 6.31.139.2 version , download after installation drive, after installation restart.

2, download the attachment of the wireless Limited.rar, and then unzip, on the batch on the right button, the administrator to open, and then run the restart