Your desktop has a built in wireless system or an add-in card?
Look in device manager so see if you have a network device with a yellow exclamation point. Look at its properties and you may then try to roll back to previous driver or update to a new driver. Eitherway you will know the make of the adapter and can go to the manufacturers web site and download a driver. Let us know if you have more questions.
There are no network devices with a yellow exclamation point so I presume the one I want is missing. Is that right?
OK then is there a network section( must be as you have ethernet) and in there are there at least two devices? And is the wifi one present?
If so then go and right click on the network icon on the task bar to open Netwrok and sharing centre. In there click on Change adapter settings. There will be an ethernet adapter on that screen...is there another adapter ? If so click on its properties and tell us what you see.
in the box that has popped up for Wi-Fi Properties
Broadcom WLAN Adapter
Then there is a list of things entitled "This connection uses the following items
all of which are ticked except for Microsoft Network adapter Multiplexor Protocol
I then have options to install or uninstall
OK So Windows is seeing Wifi...must be as it is seeing two other networks. Maybe rebooting your router is next.
Then left click on the network icon and hopefully you'll see yours as well as the other two.
I note that my system which has both ethernet and wifi does not have that Multiplexor protocol thing ticked.
Try changing the channel that your wifi router is currently using.
Try switch the security encryption that your wifi router is currently using. from TKIP to AES or AES to TKIP or AES + TKIP.
Try running it open, no encryption temporarily, just to see if you can connect. Then move it back to WPA2 and play with the encryption.
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