Hi there,

It is too late but it seems I have found a solution.

1. Click “Start”.
2. Type “Device Manager” in the search box.
3. Select “Device Manager “in the list.
4. Double click “Network Adapters”.
5. Right click the wireless card.
6. Select “Properties”
7. Go to "Advanced" tab
8. Click to "HT Mode"
   
9. Change "Value" to "20MHz/40MHz Auto"
   
10. Click "OK"
    

Best Regards,

Evgeny