Hi hanoh welcome to Sevenforums.
If the network connection is working, then it's unlikely it's a driver
issue. Unfortunately speed problems are notoriously difficult to pin down, but lets give it a shot.
Firstly, I see you have filled out your system specs, so well done you
However you seem to have omitted your network adapter. If you can tell us what it is (make and model) we may be able to find you some updated drivers
, the one's that come with the adapter are very rarely up to date.