Solve IdeaPad Y400&Y500 wireless limited problem under Win8

Knowledge point analysis:

Recently, more friends feedback using Y400/Y500, pre-installed windows 8 system, connect home router AP High probability of wireless limitation can not access the Internet. After the problem occurs, you need to reconnect to WIFI. The network exclamation mark icon appears in the lower right corner. As shown below:

After analysis, the wireless network card configured by the user model is Broadcam 4313. This problem can be solved by changing the properties of the wireless network card.

The compatibility of the network card with the router and Microsoft's latest window 8 operating system have caused such problems, not the hardware failure of the machine.

Operation steps:

Step 1: Turn off the automatic power saving option of the wireless network card.

Click “Device Manager", select <;Wireless Network Card Properties & rdquo;, click <; power management

> & rdquo; will "Allow the computer to turn off this device to save power" option hook, as shown below:

Step 2: Enable “ Federal Information Processing Standard (FIPS) Compatible"Enhanced Network Compatibility

Right-click on the connected AP signal and select “View Connection Properties"""Security”“Advanced Settings”

Tick "Enable Federal Information Processing Standard (FIPS) Compatible" as shown below. If this option is not available, it is recommended to encrypt the wireless router.

Change to AES encryption:

Step 3: Roll back the wireless network card driver

Select “Device Manager", right click to select <;Wireless Network Card Properties & rdquo;, click "Driver", select "rollback driver", as shown below:

Step 4: Optimize Windows 8 TCP configuration