DLink Wireless network card can find wireless signal but cannot connect

Control Panel → network connection → wireless network connection → Right click to select "View available wireless connection" to find "chinanet wireless network, but not always connected after selecting and clicking the connection."

Click the change advanced setting in the above image. In the Wireless Network Connection Properties dialog box that pops up, do the following.
Remove all connected information from the preferred network and leave the preferred network blank.
Click on the "Wireless Network Configuration" tab, and then select the wireless network profile in the preferred network, click Delete, delete it one by one, and then click OK.

When you are done, click to view the wireless network, refresh the network list, reconnect the network