Video playback in small box in top right corner


New Member
Can someone help me with a strange problem? I'm trying to watch a video that I copied to the hard disk (not a TV recording). When I start to play it it shows only in a small box in the top right hand corner of the screen. Occasionally it will show it in fullscreen but I'm not able to work out why it sometimes does this. Playing the same video file on a laptop is working fine. I think it's something to do with the fact that before you start playing it shows you a preview in the top right hand corner but that never expands to full screen once you hit play. Anyone got any ideas how I can fix this?