Second Monitor Problem

[colang]

A few weeks ago I upgraded to Hoster v4.22 & everything has been running fine - until today (barring it being slow to open as with versions from 4.11 - but I'm living with that).

Today, while I'm at work my wife put on the karaoke. She found that on the second monitor ( 50" Full HD Plasma TV) the desktop was only extended onto about 5/6ths of the TV. When a song is played the lyrics are not centred on the screen and the first letter of some lines of lyrics is off the left side of the screen. I don't understand how it's happened or how to fix it.

The only thing I can think of, is that she had two Hoster windows open ( as we often do with no problems) and tried to set them to show side by side ( right click > Taskbar > show windows side by side ). This didn't fit properly, so she undid this.

Tonight I have tried everything I can think of to fix it from resetting everything to do with dual displays and screen resolutions in "Display settings". I also checked the TV's settings to make sure nothind had been accidentally changed.

I'm using a laptop with Windows 7 Home Premium 32 bit, i3 processor M330 2.13Ghz (x2). 3Gb RAM.