Hi Richard,
I have searched for information about the wireless adapter installed in your computer and found that your wireless adapter has 802.11n standard, which supports 5GHz bandwidth.
unfortunately, I was unable to find the Wireless adapter make and model. Let us know the make and model of the Wireless adapter.
While you reply, check if these settings help.
- Go to Desktop mode
- Select Charms > Settings > PC Info
- Click Device Manager (located in the top left of screen)
- Click the > sign to expand the Network adapters entry.
- Right-click the wireless adapter and click Properties.
- Click the Advanced tab, click 802.11n mode, under value Select Enable.
Hope the information provided is helpful. Do reply, if you need further help.