Hi Dreamhunter, welcome to Seven Forums.
Try this:-
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Step 1. Close all applications that use the network — browsers, e-mail, chat, video, weather, and any other app
that might be automatically updated in the background.
Step 2. Click Start, type device manager in the Search box, then press Enter.
Step 3. Browse to the list of devices and click to expand the Network adapters section.
Step 4. Right-click on the first adapter under Network adapters and click Uninstall. Windows will ask whether you
want to remove the associated device drivers; say no, you want to keep the device driver. Repeat for all network
adapters on your system under Network adapters.
Step 5. Close Device Manager.
Step 6. Reboot.
When you reboot, Windows will think it’s found new networking hardware and will set up fresh connections. By
the end of the reboot, your Network should be back and running in streamlined, trouble-free form.