Win7 can't get on the network and always prompts you to enter the network password

Method 1:
1. Open the run with Win+R key combination, enter gepdit.msc and press Enter;
2, in Group Policy Editor In, expand Local Computer Policy - Computer Configuration - Windows Settings - Security Settings - Local Policies - Security Options;
3. In the right window, find "Network Security: LAN Manager Authentication Level" ; and double-click to open;
4, click on the drop-down menu, select “ send LM and NTLM & rdquo;, click OK.
Method 2:
1. Open the Control Panel --- User Account and Security --- Credential Manager;
2, click “Add Windows Credentials 
3. If you have Save the account password, generally see the account information in the ordinary credentials below, if not, manually add it.
When the computer is unable to access the Internet, a Windows security window pops up, prompting you to enter the network password, then you can solve it according to the above method.