Some users in the process of using the laptop, may encounter the laptop wifi connection can not be encountered, it is necessary to carefully troubleshoot the relevant reasons, find the problem, targeted to solve it.So how do you do if your laptop wifi connection is not working?Let's take a look at it next.

Laptop wifi connection not working: incorrect system version

If the laptop using the operating system is too old, although on the surface of this system will not affect the wireless network card, but in practice you will find that even if you choose the 11n wireless network card, there will still be a wireless network using WPA or WPA2 encryption can not be connected, the problem lies in the system version.
According to Microsoft's information, although WindowsXP will support WPA and WPA2 protocols after the SP1 patch, but in practice SP1 compatibility with WPA/WPA2 still has some problems, there will still be unable to connect to the situation.The solution that is to upgrade the operating system, whether it is Windows 7.Vista or XPSP3, they can provide good support for WPA and WPA2 protocols to ensure that your wireless card can easily connect to WPA/WPA2 encrypted networks.

Laptop wifi connection not working: IP address not set correctly

Check whether the IP address is set correctly, if it is manually set a fixed IP address may not be able to connect, wireless networks are usually used DHCP automatic allocation method to connect, enter the computer's control panel - network connection options - wireless network connection - right click properties-Set TCP/IP protocol-IP address and default gateway/DNS etc. to automatically obtain it.
Verify if MAC filtering is turned on.Go to the router, check whether the router has used MAC address filtering, if MAC filtering has been enabled, you can turn it off, or add the MAC address of your own laptop's wireless network card, see clearly, it is the wireless network card and not the MAC of the laptop card. usually the IP address is set wrong is a common problem, most of the laptop wifi connection is not this reasonThis is the reason why most laptops can't connect to wifi.