There is a public wireless network in the school library. Mobile phones can be connected to the Internet, laptops can't access the Internet, and ip addresses are assigned.
Since the ip address is automatically obtained, does the wireless network in the lower right corner have a yellow exclamation point? If yes, enter the network and the * * * enjoyment center, click the red cross, and let win7 repair automatically. Or there is a problem with the library gateway, and there is also an error in DNS domain name resolution. According to the repair report of win7, please operate.