Win8 second monitor/tv issue

Hey guys need some advice and help I am running Win 8 Pro on my macbook pro (mid 2012) (CPU is Ivy Bridge i5 with intel hd 4000 integrated) and i find my display is too big for my screen, its a 26" 1080p TV, my mac is connected via hdmi/minidisplayport adapter. The screen is cropped as the side panels, charms bar, taskbar themselves seem to go beyond the screen all the way around.

I've completed windows updates. My brother who has a similar spec ultrabook (asus) not sure on the model is also having a similar issue. If anyone can shed some light on this I would greatly appreciate it.