With it connected;
Open up a command prompt by typing cmd in the search bar of your start menu. Type in
Write down the IP it was assigned, subnet mask, default gateway, and the DNS server addresses. Usually 2 or 3 DNS servers.
Open your network and sharing center. Click on Change Adapter Settings. Right click on your wireless adapter, and go down to properties. Select Internet Protocol Version 4 (TCP/IPv4) and click on properties.
Click the radio buttons to manually enter the addresses, and enter the numbers you wrote down. Select Ok, the Ok again, and it should automatically disconnect then reconnect. Put the computer to sleep, then wake it up and see if it made any difference.