Notebook win7 system wireless network connection is restricted or no connection solution

First, use the diagnostic tools in the system to diagnose the network

The system's own wireless network diagnostic function can locate network problems and To give partial repair, you can enable the built-in diagnostic tool. Just select “Diagnostics” in the above WLAN status window, and then follow the prompts.

Second, check whether the signal of the network and the router is unblocked

1. First confirm whether the network has any arrears, whether the connection line of the wireless router is good, and whether the wireless network signal is transmitted normally. ;

2, if the confirmation is a router problem, you can restart the router or restore the router settings to the factory settings;

3, if possible, it is recommended to update the wireless router firmware and computer Wireless network adapter driver to the latest version.

Third, check the status of the network service

Open the run dialog box, enter "lds;services.msc", enter the service management window, and then confirm the DNS Client, DHCP Client in the right side of the window And the status of the network service such as IP Helper (it is enabled by default), and then restart the computer.

Fourth, reset the network connection

Method: Run the command prompt as an administrator, enter the following command and press Enter;

NETSH INT IP RESET

NETSH WINHTTP RESET PROXY

IPCONFIG /FLUSHDNS

The network connection can be reset after execution.

V. Check if the IP address and DNS server address are correct.

1. Right-click the wireless network icon on the right side of the taskbar and select “Open Network and Sharing Center” option.

2, in the Open Network and Sharing Center window, click on the right side of the active network state, "Connection", in the WLAN status window, select "Attributes";

3. In the "This connection uses the following items", double-click "Internet Protocol Version 4 (TCP/IPv4)".

4, then confirm that the required IP address and DNS server address input is correct, press [ld] to confirm & rdquo; exit (default is automatically obtained), for the binding of the IP address and DNS server address For wireless networks, enter the specified IP address and DNS server address.

Sixth, reset Winsock

1, if you accidentally delete the Winsock key in the registry will also lead to limited network connection prompts, so when the network is normal, back up the registry to prevent just in case.

Location of Winsock Keys:

HKEY_LOCAL_MACHINESystemCurrentControlSetServicesWinsock

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesWinSock2

2. You can also use the command prompt (run as administrator to weight Wins) Set, command mode: netsh winsock reset