Hi,
This is a EM7345 installed on a lenovo laptop on Windows 7. Using dynamic settings on TCP/IPv4 won’t allow the connection to the internet, despite pinging to 8.8.8.8 is successful. But, setting this google’s IP into the DNS address allows the connection to the internet. Windows troubleshooter shows a security issue, like ‘WSH default inbound block’ problem. But as said earlier, setting a static DNS like 8.8.8.8 fixes the problem. Does anybody know what may be the problem? Thanks!!! 
how about using DHCP request from Windows?
The DNS server should be assigned by network operator.