The operation instruction of solving wireless restricted problem under IdeaPad y400&y500 Win8

Knowledge Point Analysis:

More recent feedback in the use of Y400/Y500 pre-installed Windows 8 system, connect the home router AP, high probability of wireless restricted

Unable to access the Internet, there is a problem, you need to reconnect WiFi, the lower right corner of the network exclamation point icon. The following figure:

After analysis, the model configuration of the wireless card is Broadcam 4313. This issue can be resolved by changing the wireless network card properties.

The compatibility of the NIC with the router and Microsoft's latest Windows 8 operating system have led to such problems, not the machine's hardware failure.

Operation Steps:

Step one: Turn off the automatic power-saving option for the wireless network card

Click "Device Manager", select "Wireless network card Properties", click "Power Management" to remove the "Allow computer to turn off this device to save power" option, as shown below:

Step Two: Enable Federal Information Processing standards (FIPS) compatibility to enhance network compatibility

Right-click on the connected AP signal, select "View Connection Properties" Click "Security" "Advanced settings";

Check the "Enable Federal Information Processing Standard (FIPS) compliant" figure below, and if not, recommend the encryption of the wireless router;

Change to AES encryption method:

Step three: Roll back the driver for the wireless network card

Select "Device Manager", right-click "Wireless Network Card Properties", click "Driver" and select "Rollback Driver", as shown below:

Step four: Optimize TCP configuration for Windows 8

Download the batch processing tool in the attachment: "Wireless Limited", after decompression, the right key to run as the administrator, restart the computer.