Win7 system open wifi prompts you missing a wireless network card how to do

            
Solution 1: Make sure the computer is equipped with a wireless network card
1. First confirm that the computer has installed a wireless network card, view the method, on the desktop, click on My Computer, right-click the pop-up menu, select Manage;
2 After entering the management, click Device Manager, in the Device Manager, find the network adapter and check if the wireless network card driver wireless exists;
3. If it is already installed, please select the wireless network card driver, then right click the pop-up menu and select Uninstall, uninstall the driver, skip if no wireless network card is installed.
Solution 2:
1. On the toolbar in the lower right corner, there will be a wireless connection icon. If you can't access the Internet, you need to do troubleshooting and repair. Click the mouse directly on the wireless icon. key.
2. Right-click on the currently connected network name and select “Status”.
3, select the "diagnostics" inside, this time, the system will automatically detect the fault and start repairing. Beginning to diagnose the fault may last for about a minute.
4, the diagnosis is completed and repaired, there will be such a prompt after success. Basic Internet problems can be solved by the system's own diagnostic tools.
Solution 3:
1. Check if the device driver is normal. Right click on the desktop & computer; icon, and select “ Manage & rdquo; in the context menu that appears. After opening the "Computer Management" form, navigate to “System Tools -> Device Manager -> Network Adapter> to view it. The driver displays a gray or yellow exclamation mark and it is not installed.
2, download the driver wizard or drive life to open the software - detection driver - install the network card driver.