Do you still have your motherboard cd? If so, just use that to install the driver. It may be an old driver but it should still work.
https://docs.google.com/document/d/1Q345XjqCMkC9J_vtScYLWDCIQCODhZlMg5_Hb6cV9ZQ/edit
My other computer is stupid. Or its just me.
I am using Windows 8.1, And how do I check if my adapter is disabled?