Monitor Problem

Hey everyone,

I'm using my LG W227WD TV as a monitor for my macbook.

For the past couple of months (I'd say 6 months) I've been using the 1920X1080 resolution, but one day, after Christmas something odd has happened.

The screen has shifted across to the right and at the left had side there's about 5inch of black t.v screen. I've tried going into the TV setting and adjusting the screen position but there's still about 2 inches of black screen on the left.

Any idea?

I plug in my Girlfriends Macbook which is identical to mine, and she can have the 1080 resolution full screen. I'm out of ideas, anyone?

Thank you

Penri Mainwaring