Resolution set at 1080p but the screen is zoomed in, with black bars all around.

[MangaAddict]

Hi, this is my first time trying Hackintosh, and I was able to install yosemite properly, and everything works fine. My monitor is a Sony tv, and even though I set my resolution to 1080p, the screen does not use the entire real estate. When I use over scan, I can't see the title bars or corners of the screen. Is there any way to fix this? Thanks.

 

[MangaAddict]

Anyone has any idea on how to fix this? Any help would be appreciated