Search:

Go to tools... Options... Content... Fonts and colors
And change the text size from there

Either there is a problem with your hard disk or with operating system.

I think you may have disabled the images in your browser settings.
You must mention the browser because different browsers have different settings.

If you are running windows then by default there will be windows media player on your system.
If you don't like it then you can always go for VLC which is a good software.It's free and you can...

Type the IP address of your D-Link device in a browser and then enter using a admin name and password, if its not changed then by default it's admin and admin for both.

Go under Wireless -->...

103 - Transmit
104 - Receive

Try 192.168.1.1

As far as I think you can not connect a NTU to a Switch directly.
You have to connect the NTU to the Router and the Router to the Switch.
That's how my company configured or installed in banks and...