1st.
Hold the "Start Up" then press letter the "R" then command prompt will pop up.
Next, from the command prompt, type "ipconfig"
Then, Ethernet Adapter Local Area Connection will be shown on the screen of command prompt.
From the Ethernet Adapter Local Area Connection, copy the "Default Gateway" and type that into the google chrome browser like the image below.
2nd.
You will need to log in now.
user: admin
password: 1234
Then, under the Network click the "Wireless LAN"
That's it, You can change now your wifi name or wifi password.
Hope it helps :)

